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Real Balanced

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Home Recipes Loaded Broccoli Cauliflower Casserole

Loaded Broccoli Cauliflower Casserole

Net Carbs:5.8g
Published:03/08/23Updated:03/08/23
10 Comments This post contains affiliate links.
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This Loaded Broccoli Cauliflower Casserole features frozen broccoli and frozen cauliflower that are steamed and then combined with a creamy cheese sauce and bacon before being baked to golden, bubbling perfection. It’s made in only 30 minutes and is a delicious weeknight dinner choice or even an easy holiday side dish!

Loaded broccoli cauliflower casserole in a baking dish with a portion on a fork with melty cheese hanging down.

Flavorful and filling casseroles like this Cheesy Beef Casserole and this Jalapeño Popper Chicken Casserole are something we make often.

This casserole recipe, in particular, is a favorite because it uses frozen veggies, which reduces extra time spent in the kitchen rinsing and chopping, which means fewer dishes, too!

Cheesy broccoli cauliflower casserole with a spoon in it on a hot pad.

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💛 Why you’ll love this broccoli cauliflower casserole
➡️ Ingredients
⏲ How to make loaded cheesy broccoli cauliflower casserole
👉 Ingredient substitutions suggestions
✨ Variations
〰️ How to serve
➜ Cooking and recipe tips
💬 FAQs
📚 More casserole recipes
🍽 Recipe

💛 Why you’ll love this broccoli cauliflower casserole

  • Straightforward ingredients that you may already have at home.
  • Low-carb, keto-friendly, and gluten-free.
  • Can be made in advance to be baked right before serving.
  • Ready in 30 minutes.
  • A great option for serving as a side dish at holiday meals, like Thanksgiving.

➡️ Ingredients

Labeled ingredients needed to make broccoli cauliflower casserole.

⏲ How to make loaded cheesy broccoli cauliflower casserole

This is an overview of the recipe’s instructions. The full instructions can be found in the recipe card at the bottom of this post.

  • Steam Frozen Vegetables: Microwave the frozen cauliflower florets then the frozen broccoli florets until tender, according to the instructions on the bags.
  • Cook Bacon: While the cauliflower and broccoli steam, cook the bacon slices in a large skillet until crispy, then transfer them to a paper towel-lined plate and crumble them into pieces.
  • Mix Casserole Ingredients Together: Stir together the shredded cheeses then, in a separate bowl, mix together the sour cream, cream cheese, mayonnaise, and spices. Open the bags of steamed vegetables and pour out any extra water. Then, into the bowl of the cream sauce, fold in the veggies, half of the crumbled bacon, and about 1 cup of shredded cheese mixture.
  • Transfer Mixture To Baking Dish: Transfer the cream sauce mixture to the prepared baking dish and, using a rubber spatula, spread it into an even layer. Sprinkle the remaining shredded cheese mixture then the remaining bacon crumbles on top.
  • Bake Casserole: Cover the casserole dish with foil, transfer it to the oven, and bake. Then, remove the foil, move the oven rack to the top rack, and turn on the oven broiler. Broil the casserole until the cheese on top is bubbly and golden.
  • Garnish And Serve: Remove the dish from the oven, and allow the casserole to cool slightly before garnishing with chopped green onions and serving.
The step-by-step process for how to make a loaded broccoli cauliflower casserole.
The final steps for how to make a broccoli cauliflower casserole recipe.

👉 Ingredient substitutions suggestions

  • Frozen Cauliflower Florets And Frozen Broccoli Florets: Fresh vegetables can be used here, as well as frozen florets that cannot be steamed in the microwave. If you choose fresh vegetables, you will need to steam the vegetables in a steamer basket on the stovetop until tender. If you choose frozen that isn’t in a microwavable steamable bag, follow the cooking instructions on the bag (you will likely need to boil or cook them in a steamer basket on the stovetop).
  • Bacon: Turkey bacon works well in place of pork bacon. The bacon can also be omitted.
  • Mayonnaise: Sour cream can be subbed for mayo at a 1:1 ratio.
  • Garlic Powder: Use 2 cloves of garlic that have been minced in place of the garlic powder in this recipe.
  • Shredded Sharp Cheddar Cheese: White cheddar, Gruyere, Colby, or gouda can be used instead.
  • Shredded Mozzarella Cheese: Provolone or white cheddar cheese can be used in place of shredded mozzarella.

✨ Variations

  • Make the casserole spicy by including ground cayenne pepper, red pepper flakes, and/or Pepper Jack cheese.
  • Include cooked shredded chicken for some added protein. Add it in when adding in the steamed vegetables and crumbled bacon.
  • For an added crunch, sprinkle bread crumbs on top of the casserole before baking. Or, for a low-carb option, use finely crushed pork rinds.

〰️ How to serve

  • Serve alongside a protein, like these chicken kebabs or baked Parmesan salmon.
  • Make the casserole your main dish and serve some jicama fries or lemon garlic spinach on the side.

➜ Cooking and recipe tips

  • After you’ve steamed the vegetables, be sure to drain them of any excess water from the bags. Doing this will ensure the cream sauce with the veggies combines together well and isn’t watery. You can do this by cutting a small hole in the bags and tipping them over the sink or by pouring the vegetables in a colander and draining them that way.
  • Storebought pre-shredded cheese or cheese you’ve freshly shredded both work! If you want to cut extra prep time off or if shredding cheese yourself isn’t an option, use pre-shredded.

💬 FAQs

Can I prepare broccoli cauliflower casserole ahead of time to cook later?

Yes, complete recipe steps 1 through 4 ahead of time. Refrigerate for up to 24 hours. Remove the dish from the refrigerator 15-20 minutes before baking. Cover it with aluminum foil and proceed with step 5 of the recipe to finish cooking.

How should the cooked dish be stored in the refrigerator?

In an airtight container, store the casserole in the refrigerator for 3-4 days.

Can this casserole be frozen to eat later?

Yes. Store the cooked casserole in an airtight freezer-safe container for up to 3 months. Let it thaw in the refrigerator overnight before reheating.

How should I reheat leftovers?

For best results when reheating, transfer the casserole from your storage container to a baking dish and bake in the oven at 425 degrees F until warmed throughout. You can also microwave a single serving for 60-90 seconds (depending on the wattage of your microwave).

📚 More casserole recipes

  • Buffalo Chicken Casserole
  • Sausage Breakfast Casserole
  • Bacon Green Bean Casserole
  • Philly Cheesesteak Casserole

🍽 Recipe

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Loaded Broccoli Cauliflower Casserole on a baking dish with a portion on a fork atop a marble countertop.

Loaded Broccoli Cauliflower Casserole


★★★★★

5 from 6 reviews

  • Author: Sara Nelson
  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Total Time: 30 minutes
  • Yield: 6 servings 1x
  • Category: Main Dish
  • Method: Bake
  • Cuisine: American
  • Diet: Gluten Free
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Description

This Loaded Broccoli Cauliflower Casserole features frozen broccoli and frozen cauliflower that are steamed and then combined with a creamy cheese sauce and bacon before being baked to golden, bubbling perfection. It’s made in only 30 minutes and is a delicious weeknight dinner choice or even an easy holiday side dish!


Ingredients

  • 12-ounce bag frozen cauliflower florets
  • 10-ounce bag frozen broccoli florets
  • 4 bacon slices
  • 2/3 cup (160 grams) sour cream
  • 4 ounces cream cheese, softened
  • 2 Tablespoons (30 grams) mayonnaise
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon pepper
  • 1/8 teaspoon onion powder
  • 1/8 teaspoon paprika
  • 1 1/2 cups (168 grams) shredded sharp cheddar cheese
  • 1/2 cup (56 grams) shredded mozzarella cheese

Garnish:

  • 2 Tablespoons finely chopped green onions


Instructions

  1. Preheat Oven And Preparing Baking Dish: Place oven rack on middle rack, preheat oven to 450 degrees F, and generously coat 8×8-inch baking dish in nonstick cooking spray.
  2. Steam Frozen Vegetables: Microwave frozen cauliflower florets then frozen broccoli florets until tender, according to instructions on bags.
  3. Cook Bacon: While vegetables cook, in a large skillet over medium heat, cook bacon until crispy. Transfer cooked bacon to a paper towel-lined plate, then crumble into pieces.
  4. Mix Casserole Ingredients Together: In a small mixing bowl, stir together shredded cheeses. Then, in a separate mixing bowl, mix together sour cream, cream cheese, mayonnaise, and spices. Open bags of steamed vegetables and pour out any extra water. Then, into bowl of cream sauce, fold in veggies, half of the crumbled bacon, and ~1 cup of shredded cheese mixture.
  5. Transfer Mixture To Baking Dish: Transfer cream sauce mixture to prepared baking dish and, using a rubber spatula, spread into an even layer. Sprinkle remaining shredded cheese mixture, then remaining bacon crumbles on top.
  6. Bake Casserole: Cover dish with foil, transfer to oven, and bake for 12-15 minutes. Then, remove foil, move oven rack to top rack and turn on oven broiler. Broil casserole until cheese on top is bubbly and golden, about an additional 1-2 minutes, watching carefully to ensure it doesn’t burn.
  7. Garnish And Serve: Remove dish from oven, allow casserole to cool slightly before garnishing with chopped green onions and serving.

Recipe Notes:

Making Recipe In Advance: You can complete steps 1 to 4 ahead of time. Refrigerate for up to 24 hours. Remove the dish from the refrigerator 15-20 minutes before baking. Cover it with aluminum foil and proceed with step 5 of the recipe to finish cooking.

Refrigerator Storage: Store the casserole in an airtight container in the refrigerator for 3-4 days.

Freezer Storage: Store the cooked casserole in an airtight freezer-safe container for up to 3 months. Let it thaw in the refrigerator overnight before reheating.

Reheating Instructions: For best results when reheating, transfer the casserole from your storage container to a baking dish and bake in the oven at 425 degrees F until warmed throughout. You can also microwave a single serving for 60-90 seconds (depending on the wattage of your microwave).

Keywords: broccoli cauliflower casserole, broccoli and cauliflower bake, broccoli cauliflower cheese casserole

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10 Comments

  1. Liz says

    March 8, 2023 at 3:56 pm

    This was so good!! Was a great way to get in some extra veggies. We loved it!

    ★★★★★

    Reply
  2. Gina says

    March 8, 2023 at 2:02 pm

    This was delicious!

    ★★★★★

    Reply
  3. Ksenia says

    March 8, 2023 at 1:34 pm

    This tasted divine!!! So creamy and cheesy. Will be going into the regular weekly rotation!

    ★★★★★

    Reply
  4. Clara says

    March 8, 2023 at 12:38 pm

    There’s not a single thing I didn’t love about this recipe. A real winner!

    ★★★★★

    Reply
  5. Kris says

    March 8, 2023 at 10:30 am

    This was so delicious!

    ★★★★★

    Reply
  6. Doug says

    January 13, 2022 at 2:39 pm

    Made recipe, everyone seemed to like it. One thing I learned, mozzarella cheese is not easily grated. wound up using food processor.

    Reply
  7. Beth says

    August 24, 2021 at 7:48 pm

    My husband is hard to please with keto food…….he loved your loaded broccoli cauliflower casserole recipe!!!

    ★★★★★

    Reply
  8. Brooke says

    July 12, 2021 at 11:14 am

    Could you prep the dish ahead of time and bake later?

    Reply
    • Sara Nelson says

      July 14, 2021 at 12:00 pm

      I haven’t tried that, but I would think so!

      Reply
  9. Chelsea Sloan says

    July 7, 2021 at 8:31 pm

    Loved it

    Reply

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My name is Sara Nelson, and I am the face behind Real Balanced. I am a Mom to two and a proud Wisconsinite. Here, you will find easy and delicious tried-and-true recipes that can often be made in minimal time. Read More
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