Vegetable Alfredo Pasta Bake

$9.09 recipe / $1.13 serving
by Beth - Budget Bytes
4.44 from 23 votes
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Okay, so it’s not really alfredo (or “Ameri-fredo” Sauce) because it doesn’t even have any cream, but it’s close enough that I’m going to call it that. This fake-out alfredo is a little lighter and doesn’t hit your belly like a ton of bricks. That’s a little more my speed.

This dish reminds me of the white vegetable lasagna that I used to love so much as a kid, except there’s no tedious layering going on. It definitely isn’t one of those quick one-dish meals that we all love so much, but sometimes a little extra time in the kitchen is totally worth it. I used four pots/dishes to make this pasta and I’m not the least bit sorry. How can you be sorry when you have pasta slathered with a creamy sauce and a ton of delicious little vegetable pieces that give every bite a new flavor and texture? You can’t. You just can’t be sorry about dirtying dishes when you have something so great (and I don’t even have a dishwasher, y’all!).

So, choose a day when you have some time and energy to make a masterpiece in the kitchen and make. this. pasta. Cooking can be therapeutic. Turn on some music and enjoy the process just as much as you do the end result.

Top view of a pan of Veggie Alfredo Pasta Bake with wooden spoon


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Vegetable Alfredo Pasta Bake

4.44 from 23 votes
This super creamy yet light Vegetable Alfredo Pasta is loaded with enough vegetables to make your salad jealous. 
A baked veggie alfredo dish served in a baking dish.
Servings 8
Prep 15 minutes
Cook 1 hour
Total 1 hour 15 minutes

Ingredients

VEGETABLE MIX

  • 1 Tbsp olive oil ($0.16)
  • 1 small onion ($0.52)
  • 4 cloves garlic ($0.32)
  • 3 medium carrots ($0.36)
  • 1 medium zucchini ($0.82)
  • 1/2 lb. frozen broccoli & cauliflower pieces ($0.83)
  • 1/4 lb. frozen chopped spinach ($0.41)
  • Salt and pepper to taste ($0.05)

(not)ALFREDO SAUCE

PASTA AND TOPPING

  • 1 lb. pasta (elbow, shells, etc.) ($1.50)
  • 1 cup shredded gouda or smoked mozzarella ($1.20)
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Instructions 

  • Begin by making the vegetable mix. Dice the onion and mince the garlic. Sauté both in a large skillet with the olive oil over medium heat until soft. Add the frozen broccoli and cauliflower pieces and and the frozen spinach to the skillet. Continue to sauté until the frozen vegetables are warmed through.
  • While the onions, garlic, frozen broccoli, and frozen spinach are cooking, peel and shred the carrots using a large hole cheese grater or box grater. Dice the zucchini into small pieces. Add the carrots and zucchini to the skillet and sauté for one to two minutes more. Season the skillet lightly with salt and pepper. Set the sautéed vegetables aside.
  • Bring a large pot of water to a boil for the pasta. Cook the pasta according to the package directions (boil for 7-10 minutes, or until al dente). Drain the pasta in a colander.
  • While the pasta is cooking, prepare the sauce. Add the butter and flour to a medium sauce pot. Melt the butter over medium heat and use a whisk to incorporate the flour as the butter melts. Allow the flour and butter mixture to begin to bubble. Continue to whisk and cook the mixture for two minutes. If it begins to brown, move on to the next step immediately.
  • Whisk the milk into the butter and flour mixture. Also stir in the nutmeg, garlic powder, salt, and some freshly cracked pepper. Allow the milk to come up to a simmer over medium heat, making sure to whisk frequently to prevent scorching on the bottom. When the milk comes up to a simmer it will begin to thicken.
  • When the sauce is thick enough to coat a spoon, turn the heat down to low and whisk in the parmesan until it is melted and the sauce is thick. Turn the heat off.
  • Preheat the oven to 375 degrees. Return the well drained pasta to the large pot with the heat turned off. Add the sautéed vegetables and the white sauce. Stir until everything is well combined and coated in the sauce. Pour the mixture into a casserole dish that has been coated with non-stick spray. Sprinkle the shredded gouda on top and bake in a preheated 375 degree oven for 30 minutes. Serve hot.

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Nutrition

Serving: 1ServingCalories: 490.16kcalCarbohydrates: 58.75gProtein: 20.13gFat: 19.58gSodium: 728.09mgFiber: 4.09g
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Top view of three bowls of Vegetable Alfredo Pasta Bake

Step by Step Photos

Fresh Vegetables on counter top

Start by preparing the vegetable mix. For fresh vegetables, I used one small onion, four cloves of garlic, three carrots, and one zucchini. You’ll want to cut the onion and zucchini into a small dice, mince the garlic, and shred the carrots with a cheese shredder or box grater. 

Package of Frozen Vegetables and package of frozen spinach

I also used some frozen vegetables because I didn’t want to buy an entire head of cauliflower or a whole bunch of broccoli. Plus this way they’re already chopped. These are both one pound bags, but I used half of the bag of broccoli and cauliflower (“winter blend”) and 1/4 of the bag of spinach. So, that’s 1/2 lb. of broccoli/cauliflower pieces and 1/4 lb. of frozen chopped spinach.

Vegetables, onion and garlic cooking in pan

I began with the onion and garlic. Sauté them in a large skillet with 1 Tbsp olive oil until soft. Then add the 1/2 lb. of frozen broccoli/cauliflower and 1/4 lb. frozen spinach. Continue to sauté until those are warmed through (I did not thaw them first). Use the time while these are cooking to shred the carrots and dice the zucchini.

Reminder of veggies added and mixture continued to cook on stovetop

Add the zucchini and carrots to the skillet and sauté just a couple minutes more. I wanted the vegetables to be slightly crisp still because they will cook a little further in the oven later. Plus, I just like my vegetables to retain a little crunch. Season the skillet with a pinch of salt and pepper. Set the skillet aside while you make the pasta and sauce.

Sauce ingredients in pan with whisk

Start the water for the pasta because that can cook while you’re making the sauce. To make the sauce, add 4 Tbsp of butter and 1/4 cup all-purpose flour to a medium sauce pot. Turn the heat onto medium and whisk the flour and butter together as the butter melts. Let the mixture begin to bubble, then whisk and cook for 2 minutes. This will slightly toast the flour to get rid of that gluey flavor. If the mixture begins to brown, move on to the next step immediately, or you’ll have a brown “white” sauce!

Milk and seasoning added to other sauce ingredients in pan and whisked in

Whisk four cups of milk (2% or higher milkfat). Then whisk in 1/4 tsp nutmeg, 1/4 tsp garlic powder, 1/2 tsp salt, and some freshly cracked pepper. Let the milk come up to a simmer over medium heat, making sure to whisk frequently to keep the bottom from scorching.

Thickened sauce on spoon

When the milk begins to bubble it will also begin to thicken – that’s when those starch granules in the flour plump up and make everything thick. It should get thick enough to coat a spoon like this (oops, I’m focused on the whisk and not the spoon! My bad.). Once you get here, turn the heat down to low.

Parmesan cheese added to sauce mixture in pot

Whisk 2/3 cup grated parmesan into the hot sauce until it is melted. This will further thicken the sauce. It will now coat a spoon a bit thicker! Turn the heat off.

Cooked pasta in colander to drain

By this time your pasta should be finished cooking. Make sure it drains really, really well. You don’t want a bunch of water trapped in the shells to make everything watery. I used this cool shape, but you can use elbows, shells, rotini, or whatever you want. Oh, you’ll want to preheat the oven to 375 now, too.

Cooked pasta and veggies added to pot of sauce

Return the drained pasta to the big pot that it cooked in (heat turned off) and add the prepared vegetables and the sauce. Stir everything really well or until everything is coated in the delicious sauce.

Pasta mixture poured into casserole dish and shredded gouda sprinkled over the top

Pour everything into a casserole dish (this one is about 9×9 inches and it was full up to the top). Sprinkle a cup of shredded gouda (smoked mozzarella would also be nice) on top. Bake in the preheated 375-degree oven for 30 minutes.

Finished dish on stovetop

And then OMG.

Casserole dish of Vegetable Alfredo Pasta Bake with three small bowls served up

Eat it up! It’s so creamy and good with tons of vegetables. Yessss.

Close up of Vegetable Alfredo Pasta Bake

Look at the creamy goodness!

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Comments

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  1. Wow! This was such a hit! Every member in my family loved it (even my picky 3 year old).. This is definitely being added to my rotation of go to meals.. Thank you!

  2. I made this tonight, minus the zucchini and plus some chicken breast. I didn’t bake it because I don’t have an oven, but it’s just as delicious and totally reminiscent of the frozen veggie lasagnas from my childhood.

  3. When I got my first CSA box today, all I could think was “What am I going to make starring zucchini/squash?” You guess it, I had 4 different types. Luckily I decided to browse through your recipes and decided to try this one. Very, very good!

  4. I can’t wait to try this recipe. I like to use my family as test subjects for a full recipe and then I’ll adjust the ingredients for just me while I’m away at college.

    Quick question: I know that a lot of cream sauces use nutmeg to add ‘depth’ to the flavor, but my sister and I are allergic. Is there something I can use instead? Or would it be alright to just skip it?

    1. I think the flavor is subtle enough that you could skip it without losing much. Maybe add a pinch of black pepper.

  5. Another delicious recipe! I did tweak it a bit so I could make it without having to go to the store. What can I say? I was lazy yesterday. ;) I left out the onion, carrots, and zucchini and substituted chopped asparagus and increased the garlic. I added about 6 oz gorgonzola to the sauce with the parmesan. (I can’t get enough blue cheeses). I also added a tsp of dry mustard. I didn’t have smoked mozz or gouda, so I topped it with regular mozzarella. It filled a 9×13 pan and was plenty suace-y. Seriously delicious. I love your blog! Please don’t ever stop posting.

  6. Oh wow. This turned out SO well! Normally I have little tweaks that I make to recipes after the first time (“more spices” or “use different cheese” or whatnot) but there is literally nothing I’d change about this one. The entire family loved it!

  7. Love your recipes! Baked oatmeal has become my favorite “go-to” lunch for the past couple of weeks. :-)

    Do you think that using 1% milk instead of 2% or higher would be a problem in this recipe?

  8. I made this tonight. Despite my fumbled attempt at the cheesy sauce (let’s just say I have a very scalded pan) it still turned out pretty good. But it made a ton. I probably can convince my kids to eat it again like it is one more time, but after that I will need to reinvent. Any suggestions on how to turn this into another meal?

    1. I have some in the freezer right now (because it was too much for me, too!), so I’m going to reheat some soon to see how it holds up. That might be the best solution.

      1. Have you gotten a chance to try it after freezing?

        I have my eye on this recipe, but I don’t know if we could eat all of that in time! :)

      2. Oh, yes! Thanks for reminding me. I did freeze and reheat it in the microwave and it was delicious. I had the last frozen portion yesterday, as a matter of fact! :)

  9. I am a HUGE fan of your website and share your recipes all the time. My boyfriend and I keep the chicken and lime soup as well as the hearty meatball in heavy rotation. This will be added to the list for sure! I made some swaps using gluten free pasta and gf all purpose flour. YUUMMMMM!

  10. Made this on Sunday and still eating left overs, it turned out great! The only change we made was substituting fresh asparagus for the frozen broccoli/cauliflower.

  11. OMG. Just looking at this makes me want to go out again, buy Zucchini & cauliflower and cook this tonight! Too bad we’re currently trying out the 2:5 diet, and of course today has to be one of those days, so this is no option, but be sure I’ll do it latest on the long Easter weekend. Thank you Beth, there can never be too many pasta recipes :)

  12. Have you ever tried stirring in a cup or so of cottage cheese to create a quick “sauce”

  13. Those are the CUTEST PASTA SHELLS I HAVE EVER SEEN. I’m in love with the shape. And if anyone says that strong personal affection for the shape of your pasta doesn’t affect the flavor … they’re so very wrong.

    Also, I was looking back through some of your recipes — I’m trying the Oven Roasted Autumn Medley for dinner tonight — and I saw you had a Victorinox chef’s knife. *Fist bump* Word. I love my Victorinox. -:D

    1. Hahaha, I think pasta shape is very important, too! I didn’t always think so, but now I know that you have to have the right shape for the right application. And I LOVE unique shapes. I got my Victorinox in a pinch and it’s definitely been worth it!