This Vegan Broccoli Cheddar Casserole is a true comfort food made vegan. It combines tender broccoli and cauliflower with a zesty, dairy-free cheddar sauce.
The secret to making this casserole so easy AND cheesy is my absolute favorite vegan cheese dip: House Party Cheesy Dip. This is not an ad. I will never recommend anything here unless I truly love it, and I will never not recommend this dip. I especially love it for being top 9 allergy-friendly, something we are always looking for in our house.
This casserole is perfect for a hearty main dish or as a side.
For more easy vegan side dishes, try this Instant Pot Brown Rice Risotto or German Cucumber Salad.
Why You’ll Love This Vegan Broccoli Cheddar Casserole
- Quick & Easy – This broccoli cauliflower bake only takes an hour to throw together and the most complicated part about it is chopping the heads of broccoli and cauliflower into florets. If you buy pre-chopped veggies, you’re golden!
- Easy to customize – It is so easy to add your own twist to this recipe. Add more veggies like bell pepper or zucchini, swap the noodles for a gluten-free option like quinoa, or use House Party’s Jalapeno Cheesy Dip for an extra kick.
Ingredients for Vegan Broccoli Cheddar Casserole
- Broccoli – One head of broccoli, cut into florets is the perfect amount for this casserole. You can always buy pre-cut broccoli to save on prep time.
- Cauliflower – Again, buy pre-bagged if you want to save yourself some time!
- Noodles – I like a longer noodle lime Gemelli for this casserole, but any noodle will work! You can always swap for a gluten-free noodle or grain option like quinoa.
- Olive Oil – For roasting the veggies.
- Spices – Garlic, onion, and parsley add some flavor to the veggies while they’re roasting.
- Oat Milk – A little extra liquid helps the veggies and noodles cook to perfection in the final step. You can swap for any plant milk of your choice, dairy milk if you aren’t vegan, or even water in a pinch.
- Vegan Queso Dip – If you haven’t tried House Party Cheesy Dip yet, do yourself a favor and do it now. I had long been on the search for a worthy substitute for the dairy-filled queso of my childhood, and let me tell you, this is IT.
- Vegan Parmesan Cheese – You can top the casserole with vegan parmesan, cheddar, or any flavor you like.
How to Make Vegan Broccoli Cheddar Casserole
Preheat the oven to 400 degrees Fahrenheit.
Cut the cauliflower and broccoli into florets.
Tip: To avoid extra crumbs when cutting the broccoli and cauliflower heads, first cut off the stem, then cut each of the smaller stems from the bottom to create the florets.
Place the broccoli and cauliflower florets into a large casserole dish. Add the spices, salt, pepper, and olive oil and mix until everything is evenly coated.
Place the casserole dish in the oven and roast at 400 degrees Fahrenheit for 25-35 minutes or until the veggies are just fork tender, but not too soft. The casserole will be returned to the oven, so make sure not to overcook in this step.
While the veggies are roasting, cook the noodles by bringing a large pot of salted water to a boil. Cook the noodles 1for -2 minutes less than the package recommendation for al dente. The noodles will continue to cook in the oven.
Carefully remove the casserole dish from the oven and reduce the oven heat to 350 degrees Fahrenheit. Add the cooked noodles, oat milk, and Cheesy Dip. Mix until everything is evenly coated. Top with vegan parmesan cheese, or another vegan cheese of your choice.
Bake at 350 degrees Fahrenheit for about 10 minutes until the vegan parmesan is melty and the veggies are tender.
Remove from the oven. Let cool for a few minutes. Serve and enjoy!
How to Store Vegan Broccoli Cheddar Casserole
- Fridge: This casserole will last 5-7 days in the fridge when stored in an air-tight container.
More Tips for Making Vegan Broccoli Cheddar Casserole
- Not Vegan? Use regular cheese or milk in this recipe. Add cooked bacon or shredded rotisserie chicken.
- Gluten-free? Swap the noodles for a gluten-free noodle or a gluten-free grain like quinoa.
- Want more protein? Add cooked cannellini beans or lentils, chop plant-based sausage, or add plant-based chorizo for more protein.
Looking for more delicious vegan dinners? Try this Vegan Lasagna or Roasted Cauliflower Steaks.
Vegan Broccoli Cheddar Casserole
Ingredients
- 1 head broccoli, cut into florets
- 1 head cauliflower, cut into florets
- 2 tbsp olive oil
- 2 tsp garlic powder
- 1 tsp onion powder
- 1 tsp parsley
- ½ tsp salt
- ½ tsp black pepper
- ½ pound gemelli (or any noodle of choice)
- â…” cup House Party Mild Cheddar Cheesy Dip
- ÂĽ cup vegan parmesan cheese
Instructions
- Preheat the oven to 400 degrees Fahrenheit.
- Cut the cauliflower and broccoli into florets.
- Place the broccoli and cauliflower florets into a large casserole dish. Add the spices, salt, pepper, and olive oil and mix until everything is evenly coated.
- Place the casserole dish in the oven and roast at 400 degrees Fahrenheit for 25-35 minutes or until the veggies are just fork tender, but not too soft.
- While the veggies are roasting, cook the noodles by bringing a large pot of salted water to a boil. Cook the noodles 1-2 minutes less than the package recommendation for al dente.
- Carefully remove the casserole dish from the oven and reduce the oven heat to 350 degrees Fahrenheit.
- Add the cooked noodles, oat milk, and Cheesy Dip. Mix until everything is evenly coated. Top with vegan parmesan cheese.
- Bake at 350 degrees Fahrenheit for about 10 minutes until the vegan parmesan is melty and the veggies are tender.
- Remove from the oven. Let cool a few minutes. Serve and enjoy!
Notes
- Not Vegan? Use regular cheese or milk in this recipe. Add cooked bacon or shredded rotisserie chicken.
- Gluten-free? Swap the noodles for a gluten-free noodle or a gluten-free grain like quinoa.
- Want more protein? Add cooked cannellini beans or lentils, chop plant-based sausage or add plant-based chorizo more more protein.
Nutrition
Please note, while all ingredients used in this recipe have been verified to be vegan and free of applicable allergens at the time of recipe creation, different brands may differ in their ingredients or processing procedures and may change their ingredients at any time. For some recipes, I do include ingredients that are processed in a facility that processes other allergens. Please make sure to check the ingredients and processing procedures for your specific purchases to ensure they meet your dietary needs.
Last Updated on February 14, 2025
I love having these one-dish casserole recipes to make in a pinch. This recipe is so tasty!
I can’t wait to try this recipe! This sounds delicious! Thanks for sharing.
Yum! I will have to try this since I love broccoli cheddar soup!