Keto Broccoli Casserole (5 Ingredients)

4.50 from 18 votes
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This 5-ingredient keto broccoli casserole is easy to make, flavorful, and delicious. It’s loaded with cheese and has some green veggies. Thus, it makes for a great healthy vegetarian dish.

Broccoli and cheddar pair so well together. They are even better when they are baked into a warm casserole.

This five-ingredient casserole will quickly become one of your favorites. It’s creamy cheesy, and is a great comfort food dish. The cheese crisps up nicely on top, making it delicious!

brocoli casserole in round dish

The casserole makes for a great lunch or dinner. So, serve it alongside a fresh salad and have a perfect meal.

Putting green vegetables into a cheesy casserole is a great way to sneak them into your diet. You will like this recipe even if you aren’t a big fan of broccoli.

Why? That’s because the broccoli will blend right in. Especially if you chop it up small.

dish of broccoli casserole on dish towel

Ingredients You’ll Need

Fresh Broccoli (1 head)

Heavy Cream (1/2 cup)

Sour Cream (1/2 cup)

Mature Cheddar Cheese (1 cup, shredded)

Onion Powder (1 tbsp)

Salt (a pinch)

Black Pepper (a pinch)

ingredients in bowls for casserole

How to Make Keto Broccoli Casserole

Step 1. Preheat the oven to 350F (180C). Chop the broccoli into small pieces. Try to keep the pieces the same size. This will ensure that they cook evenly.

Step 2. Combine the broccoli with sour cream, heavy cream, 1/3 cup of the cheddar cheese, onion powder, salt, and pepper in a bowl.

I do recommend to mix everything in a separate bowl before putting it into the pan.

However, it’s ok to mix in the pan if you are tight on time and tools. Or just want fewer dishes to wash.

Step 3. Pour the ingredients into the baking dish of your choice. Ceramic pans work well.

Spread the mixture out so that it’s evenly distributed in the dish. Sprinkle the remaining 2/3 cup of cheese evenly on top.

Step 4. Bake for 15-20 minutes or until the top starts to get golden brown.

Let the casserole cool for a few minutes before serving. It’s easier to remove from the pan once it’s cooled off a little bit.

steps to prepare casserole

Can You Eat Broccoli on a Keto Diet?

Broccoli is a great vegetable to have while on a keto diet. As mentioned before, it’s high in fiber and relatively low in carbs.

Broccoli is also loaded with nutrients and vitamins to keep you healthy. One cup of cooked broccoli contains almost 250% of your daily target for Vitamin K.

It’s also extremely high in Vitamin C, chromium, and folate. Each cup of broccoli contains 2-3 grams of fiber. High fiber intake is essential for healthy digestion.

casserole slice on plate with forkful

Can You Freeze Broccoli Casserole?

You can freeze small portions in individual meal prep containers for easy grab-and-go lunches. The casserole will thaw out just in time to heat up for lunch or dinner.

It’s a great meal to pull out of the freezer on a busy weeknight. Just thaw it in the refrigerator the night before.

Thus, bake the casserole before freezing. Let it cool and cover it with a tight lid. A baking dish like this with a lid will work great here.

top view of casserole in ceramic dish

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Watch Full Instructions

5-ingredient keto broccoli casserole
4.50 from 18 votes

Keto Broccoli Casserole (5 Ingredients)

By Karo @ AllNutritious
This 5-ingredient keto broccoli casserole is so easy to make and flavorful. It's a perfect dinner meal when you're on a low carb diet. Gluten-free and vegetarian.
Prep: 10 minutes
Cook: 20 minutes
Total: 30 minutes
Servings: 4 slices


  • 1 head of broccoli
  • 1/2 cup heavy cream
  • 1/2 cup sour cream
  • 1 cup mature cheddar cheese shredded
  • 1 tbsp onion powder
  • pinch of salt and black pepper


  • Preheat the oven to 350F (180C).
  • Chop broccoli into small pieces.
  • Add broccoli, heavy cream, sour cream, 1/3 cup of cheese, onion powder, and salt with pepper into a baking dish.
  • Stir well and top up with the remaining cheese.
  • Bake in the oven for 15-20 minutes until it's golden brown.

Recipe Video


Serving: 1 slice | Calories: 321kcal | Carbohydrates: 13g | Protein: 12g | Fat: 26g | Saturated Fat: 15g | Polyunsaturated Fat: 7.9g | Trans Fat: 0.9g | Cholesterol: 79mg | Sodium: 277mg | Fiber: 3.5g | Sugar: 4.2g

Nutrition information is automatically calculated, so should only be used as an approximation.

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