Spaghetti Squash Casserole - Healthy Recipes Blog (2024)

• Add more veggies, such as ½ cup of sauteed spinach (drain it well), ½ cup of sauteed mushrooms, ¼ cup of sauteed onions, or ¼ cup of chopped green onions.
• Add a cup of cooked and shredded grilled chicken breast and turn this casserole into a complete meal.
• I sometimes add ½ cup of bacon bits to the mixture.
• You can use different cheeses. Provolone, gruyere, and gouda are excellent options.
• Use softened cream cheese instead of sour cream.
• You can use dried oregano instead of thyme. Both work equally well.
• Substitute a teaspoon of garlic powder for the minced garlic.

Like all casserole recipes, this one is flexible and forgiving. So go ahead and experiment with your own additions!

Scroll down to the recipe card for detailed instructions. Here are the basic steps for making this spaghetti squash casserole:

Your first step is to cook the squash. I cook it in the microwave. You can also bake it in the oven. Scoop out the pulp and seeds, and rake a fork back and forth to remove strands of the flesh into a bowl.

Whisk an egg, sour cream, and spices in a bowl. Add the squash strands and shredded cheese and mix until uniform.

Transfer the mixture to a greased baking dish and bake it until browned, for about 40 minutes, in a 400°F oven.

Let the casserole rest, then cut it into four squares and serve.

• Add an extra ¼ cup of sour cream or an additional egg if adding shredded chicken.
• Thanks to the addition of egg, this casserole is sturdy enough to cut into squares, as shown in the photo below. If you'd like to omit the egg, increase the sour cream to ¾ cup and use a large spoon to scoop the casserole onto plates.

Should I add flour?

There's no need to add flour. The egg acts as a binder, and the sour cream adds substance and creaminess. The casserole's texture is excellent without any added starch.

Should I cook the spaghetti squash before adding it to the casserole?

Yes. You can bake it in the oven or microwave it. I prefer microwaving because it's easier and faster.

Can I substitute Greek yogurt for sour cream?

I don't recommend that. I tried it and thought it wasn't as good.

This casserole makes an excellent side dish but is also substantial and filling enough to serve as a meatless main dish.

I usually serve it as a side dish. And since I bake it in a400°F oven, I like to serve it with a main dish that I can cook in the same oven, such as:

• Pork meatballs
• Baked chicken thighs
• Keto tuna casserole
• Buffalo chicken
• Jerk chicken
• Baked chicken drumsticks
• Keto ground beef casserole

You can keep the leftovers in the fridge, in a sealed container, for up to 4 days. Reheat them gently in the microwave at 50% power.

You can also freeze this casserole. Allow it to cool completely, then wrap it in a plastic wrap layer and then foil. It can be frozen for up to three months.

Spaghetti Squash Casserole

This deliciously cheesy spaghetti squash casserole makes a wonderful side dish and is filling enough to serve as a meatless main dish.

Servings: 4 servings

Calories: 226kcal

Add Your Own Notes

Nutrition per Serving

Serving: 0.25recipe | Calories: 226kcal | Carbohydrates: 10g | Protein: 10g | Fat: 17g | Saturated Fat: 10g | Sodium: 509mg | Fiber: 2g | Sugar: 3g