Broccoli Spinach Casserole (keto)

The keto broccoli spinach casserole is healthy comfort food. It makes a tasty low carb side dish. It’s a creamy and cheesy vegetable casserole that would be great for a holiday meal and has only 2.6g net carbs and 7 grams of protein! Even if you are not on a keto diet, your family will love the flavor of this broccoli cheese casserole.

You might also like this 3 ingredient creamy spinach keto recipe.

Who doesn’t love a delicious casserole especially when it’s creamy and cheesy like this keto broccoli spinach casserole. This is one of those low carb side dishes that you can serve with just about anything or you can add a little cooked chicken or ham and make it a complete meal!

This comforting dish is really easy to make and only has 2.6g net carbs and 7g of protein per serving. It also is gluten free and doesn’t use milk, heavy cream or flour to thicken it. I used cream cheese instead. And we just have some gooey melted cheese on top instead of breadcrumbs.

This has become one of my more popular recipes for a keto side dish recipe for the holidays. Plus it freezes well and sometimes I freeze a double serving for a quick keto lunch.

Recipe ingredients I used and substitutions.

I originally wanted this to be just a keto cheesy broccoli casserole but in the end I added spinach to bulk it up a bit. The simple ingredients I used are broccoli, fresh baby spinach, mayonnaise, full fat cream cheese, onion powder, salt, black pepper, fresh garlic, sharp cheddar cheese and mozzarella cheese. Add a few hot pepper flakes for a little heat.

• Broccoli and Spinach – Today remade this with fresh broccoli and all you need to do is chopping it into small pieces and microwave for 5 minutes. I also used fresh spinach. You can use frozen of either just make sure they are cooked and drained of excess water. You want them to be hot so they will melt the cheeses when you mix them.
• Mayonnaise and Cream Cheese – Since this is low carb, we don’t use flour for this cheesy sauce. But instead we use both of these foods along with the other cheeses.
• Cheddar and Mozzarella Cheese – I like the flavor of cheddar in the casserole with mozzarella as the melty cheese on top. You can also add a bit of grate parmesan cheese in or on the broccoli mixture before baking for extra flavor. Or use a different cheese on top if you want, like Monterey Jack or Pepper Jack.
• Spices – I simply used onion powder because it has less carbs than fresh onions and it will add more flavor to the vegetables. I also use fresh garlic which I just prefer. If you want to use garlic powder just remember that 1 clove of garlic equals ¼ teaspoon of garlic powder.

Note you can use more or less of the veggies if you want or even add other vegetables. Cauliflower, asparagus, mushrooms, kale and other greens would be good low carb veggies to try.

I used fresh spinach because it wouldn’t shrink as much and I could use less. Did you know 1 ½ pounds of fresh spinach is equivalent to a 10 ounce package of frozen spinach? Learn more.

How to make keto broccoli spinach casserole.

Step 1: Preheat the oven to 350°F. Then get out a baking dish or casserole dish and prepare it by spraying with nonstick cooking spray. I used a 7 ½″x10″ baking dish for this recipe.

Step 2: First cook the broccoli florets in the microwave according to the package directions. Or if using fresh, chop into bite sized pieces and rinse with water. Place in a microwave safe bowl with a tablespoon of water and cover with plastic wrap.

Microwave for 4-5 minutes. When done drain excess water whether using fresh or frozen and make sure it’s chopped into bite sized pieces.

Step 3: Then place the steamed broccoli into a large mixing bowl along with the softened cream cheese, mayonnaise, onion powder, crushed garlic, cheddar shredded cheese and chopped fresh spinach. The heat from the cooked broccoli florets will melt the cream cheese and wilted the spinach.

Step 4: Spoon the spinach and cream cheese mixture into the prepared baking dish. Then sprinkle the mozzarella shredded cheese evenly over the top. I like using mozzarella because it gets golden brown and bubbly on top.

Step 5: Then place the baking dish in the oven and bake for 30-35 minutes until the cheese topping is nice and golden brown like the photo below. Take it out of the oven and let cool a bit before serving. Note baking time may vary.

Store leftover casserole in an airtight container or a freezer safe container to freeze for another meal. Please scroll down to view the printable recipe card.

Keto main dishes to go with this casserole

This is a very rich and rich and tasty casserole that would go great with a meaty main dish on your dinner table. Below are a few low carb main dishes that would go nicely with the keto broccoli cheese casserole.

Recipe Tips & Notes

• II have used both frozen broccoli and fresh broccoli in this recipe. Make sure they are both cooked and chopped into small pieces before adding to the casserole. When done cooking, drain the water and add to the casserole dish and the heat from the cooked broccoli should melt the cheeses nicely and all them to coat the vegetables.
• If you want to use frozen spinach too, you want to cook and squeeze out as much excess water as possible. Because fresh spinach shrinks so much, you will use much less spinach – about ½ cup.
• If you want to make this keto broccoli casserole more of a main dish you can mix a cup or two of cooked chopped chicken, bacon, sausage or ham for a keto cheesy casserole main dish.
• And if you are looking for a cheesy rice type of keto casserole try adding cauliflower rice or even use cauliflower florets. Just make sure to precook them as you did the broccoli.
• Freeze double portions for easy keto lunches. If you are feeding a crowd you may want to double the recipe.

I really enjoyed the delicious flavors of this keto broccoli spinach casserole because it’s such comfort food for me. I’m sure if you have a picky eater in the family that doesn’t like veggies, they will like the cheesy goodness of this casserole. And here is a link to all of my healthy casseroles.

Next time I’m adding cooked rotisserie chicken or ham to make it a complete dinner. Enjoy!

The nutritional information for 1 serving is:
167 cals / 12.9g fat / 4.2g carbs / 1.6g fiber / 7g protein = 2.6g net carbs

Check out my friend Sara’s jalapeno spinach artichoke dip.