Keto Broccoli Cauliflower Bake

Golden keto broccoli cauliflower bake with melted cheddar cheese bubbling on top Save Pin
Golden keto broccoli cauliflower bake with melted cheddar cheese bubbling on top | recipesbymarisol.com

This satisfying bake combines tender broccoli and cauliflower florets with a rich, creamy cheese sauce made from heavy cream, cheddar, and Parmesan. The vegetables are briefly blanched before being coated in the seasoned sauce and baked until golden and bubbly. With only 7 grams of carbohydrates per serving, this dish fits perfectly into a keto lifestyle while delivering the comfort food flavors you crave. The addition of garlic powder, onion powder, and a hint of nutmeg creates depth, while the optional paprika adds a subtle warmth. Customize with bacon bits or different cheeses to make it your own.

Last winter, my sister who usually pretends carbs are the enemy couldn't stop eating this right out of the baking dish. She literally hovered over the counter with a fork, claiming she was just taste testing. Now she requests it every Sunday dinner like it is some kind of vegetable revelation.

I made this for a potluck last month and watched three different people ask for the recipe while simultaneously going back for seconds. The best part was hearing someone admit they usually hate cauliflower. That is when you know a recipe has real power.

Ingredients

  • 3 cups broccoli florets: Fresh florets hold their texture better than frozen and give you that perfect tender crisp bite
  • 3 cups cauliflower florets: Cut them into similar sizes so everything cooks evenly and no one gets stuck with raw pieces
  • 1 cup heavy cream: This creates that velvety restaurant style sauce that makes low carb eating feel luxurious
  • 1 ½ cups shredded cheddar cheese divided: Sharp cheddar gives you the most flavor impact without needing huge amounts
  • ½ cup grated Parmesan cheese: Adds that salty umami depth that keeps people guessing what makes it taste so good
  • 2 oz cream cheese softened: The secret ingredient that makes the sauce cling to every single floret
  • 2 tbsp unsalted butter: Forms the foundation of your sauce base and adds that buttery richness we all secretly crave
  • 1 tsp garlic powder: Sprinkle this evenly so you do not end up with garlic bombs in some bites
  • ½ tsp onion powder: Works behind the scenes to round out all the flavors without being obvious
  • ½ tsp paprika: Adds a subtle warmth and beautiful golden color to the sauce
  • ½ tsp salt: Start here and adjust later because the cheeses bring their own saltiness
  • ¼ tsp black pepper: Freshly cracked makes a noticeable difference in the final flavor
  • ¼ tsp ground nutmeg optional: Trust me on this one pinch it enhances the creaminess in ways you cannot explain until you taste it
  • 2 tbsp chopped fresh parsley: Use this for a pop of green color that makes the dish look as good as it tastes

Instructions

Preheat your oven:
Get your oven to 375°F and grease a 9x13 inch baking dish with butter or cooking spray
Blanch the vegetables:
Boil salted water and cook florets for 3 to 4 minutes then drain and pat them completely dry so your sauce does not get watery
Make the cheese sauce base:
Melt butter in a saucepan then whisk in heavy cream and cream cheese until smooth and slightly thickened
Add the cheeses and seasonings:
Stir in one cup of cheddar all the Parmesan and all seasonings until melted into a creamy sauce then remove from heat
Combine everything:
Spread vegetables in your baking dish pour sauce over them and toss gently to coat every piece
Add the topping and bake:
Sprinkle remaining cheddar on top and bake 20 to 25 minutes until golden and bubbling
Let it rest:
Wait 5 minutes before serving and garnish with fresh parsley if you want it to look fancy
Creamy low-carb broccoli and cauliflower casserole fresh from the oven with parsley garnish Save Pin
Creamy low-carb broccoli and cauliflower casserole fresh from the oven with parsley garnish | recipesbymarisol.com

My roommate walked in while this was bubbling away and literally stood in front of the oven just inhaling. That is the moment this went from regular dinner prep to can we have this every week status in our house.

Make It Your Own

Swap half the cheddar for Gruyère when you want to feel fancy. The nutty flavor pairs beautifully with the mild vegetables and makes this feel company worthy without extra effort.

Timing Is Everything

You can prep everything up to the baking step the night before. Just cover and refrigerate then add ten minutes to your bake time since it will be cold going into the oven.

Serving Suggestions

This works as a standalone meal with a simple green salad or alongside roasted chicken for a more substantial dinner. The leftovers reheat surprisingly well for lunch the next day.

  • Crumble cooked bacon on top before baking for extra flavor
  • Try mozzarella instead of cheddar for a mellower cheese experience
  • Double the recipe because you will definitely want seconds
Baked keto broccoli cauliflower casserole featuring tender vegetables in a rich cheese sauce Save Pin
Baked keto broccoli cauliflower casserole featuring tender vegetables in a rich cheese sauce | recipesbymarisol.com

This is the recipe that convinced me keto food does not have to feel like a compromise. Sometimes the simplest vegetables treated with enough love become the dish everyone remembers.

Recipe Questions & Answers

Yes, you can prepare the entire dish up to 24 hours in advance and refrigerate unbaked. When ready to serve, bake at 375°F for 25-30 minutes until heated through and bubbly.

You can substitute or add vegetables like Brussels sprouts, green beans, or spinach. Just adjust blanching time accordingly—denser vegetables may need an extra minute or two.

Yes, this freezes well for up to 3 months. Assemble in a freezer-safe dish, wrap tightly, and freeze before baking. Thaw overnight in the refrigerator then bake as directed.

Replace heavy cream with full-fat coconut cream, use dairy-free cream cheese, and substitute nutritional yeast or vegan cheese shreds for the cheddar and Parmesan. The texture will be slightly different.

Blanching ensures the vegetables cook evenly and prevents them from becoming too soft or mushy during baking. It also removes excess moisture for a creamier result.

This complements grilled chicken, baked salmon, or steak beautifully. You can also add cooked bacon bits, ham cubes, or shredded chicken directly into the dish for a complete meal.

Keto Broccoli Cauliflower Bake

Creamy, cheesy low-carb casserole with fresh broccoli and cauliflower florets baked in a rich cheese sauce.

Prep 15m
Cook 30m
Total 45m
Servings 6
Difficulty Easy

Ingredients

Vegetables

  • 3 cups broccoli florets
  • 3 cups cauliflower florets

Dairy

  • 1 cup heavy cream
  • 1 ½ cups shredded cheddar cheese, divided
  • ½ cup grated Parmesan cheese
  • 2 oz cream cheese, softened
  • 2 tbsp unsalted butter

Seasonings

  • 1 tsp garlic powder
  • ½ tsp onion powder
  • ½ tsp paprika
  • ½ tsp salt
  • ¼ tsp black pepper
  • ¼ tsp ground nutmeg (optional)

Topping (optional)

  • 2 tbsp chopped fresh parsley

Instructions

1
Preheat and Prepare Baking Dish: Preheat oven to 375°F. Grease a 9x13-inch baking dish with butter or cooking spray.
2
Blanch the Vegetables: Bring a large pot of salted water to a boil. Add broccoli and cauliflower florets, blanch for 3–4 minutes until just tender. Drain well and pat dry to remove excess moisture.
3
Prepare the Cheese Sauce: In a saucepan over medium heat, melt the butter. Add the heavy cream and cream cheese, whisking until smooth and slightly thickened, about 2–3 minutes.
4
Season the Sauce: Stir in 1 cup of cheddar cheese, Parmesan cheese, garlic powder, onion powder, paprika, salt, pepper, and nutmeg. Cook, stirring, until cheeses are melted and sauce is creamy. Remove from heat.
5
Combine Vegetables and Sauce: Spread the blanched broccoli and cauliflower evenly in the prepared baking dish. Pour the cheese sauce over the vegetables and gently toss to coat evenly.
6
Add Cheese Topping: Sprinkle the remaining ½ cup cheddar cheese over the top of the vegetable mixture.
7
Bake Until Golden: Bake for 20–25 minutes until the top is golden brown and the sauce is bubbly around the edges.
8
Rest and Garnish: Let the casserole cool for 5 minutes before serving. Garnish with chopped fresh parsley if desired.
Additional Information

Equipment Needed

  • Large pot
  • Saucepan
  • Whisk
  • Measuring cups and spoons
  • 9x13-inch baking dish
  • Knife and cutting board

Nutrition (Per Serving)

Calories 290
Protein 11g
Carbs 7g
Fat 24g

Allergy Information

  • Contains dairy (milk, cheese, butter, cream)
  • Gluten-free as written, but check all labels to confirm
Marisol Vega

Wholesome recipes, simple meal ideas, and practical cooking tips for home cooks.