Keto Spaghetti Casserole (Cheesy & Baked to Perfection)

4.89 from 9 votes

Keto Spaghetti Casserole (Cheesy & Baked to Perfection)

This cheesy baked keto spaghetti casserole is the perfect low-carb comfort food. Made with roasted spaghetti squash, ground beef, and marinara, it’s hearty, family-friendly, and easy to make ahead. You won’t even miss the pasta!

Prep Time10

Cook Time35

Resting Time5

Total Time40

Course: Dinner, Main Course

Cuisine: American, casual, Italian

Keyword: baked keto dinner, keto casserole, keto comfort food, Keto Ground Beef Recipes, keto pasta bake, keto spaghetti, low carb spaghetti squash casserole, spaghetti squash recipe

Servings:

Calories: 270kcal

Author: Kasey Trenum

Ingredients

1 lb ground beef 80/20
1/3 onion chopped if you have one
24 oz spaghetti sauce no sugar added
1 Spaghetti squash
2 cups Mozzarella cheese
1/2 cup Parm cheese
1 TB Olive oil
Salt and pepper
Parsley

Instructions

Preheat oven to 375°F. Lightly grease a 9x9 baking dish and set aside.
Roast the spaghetti squash if you haven’t already. Slice it in half, scoop out the seeds, and bake cut-side down at 400°F for 25-30 minutes or until the inside is al dente. Once cool, scrape out the strands and press between paper towels to remove excess moisture.
Meanwhile, Add ground beef and onions to the pan and cook until browned, breaking it up with a spoon or chopper. Drain grease and season with salt and pepper to taste.
Stir in the low-carb marinara sauce and let it simmer for a couple minutes.
Add roasted and separated spaghetti squash to the bottom of the greased casserole dish, top with spaghetti sauce, mozzarella and parmesan cheese.
Bake uncovered for 10-15 minutes, or until the cheese is melted and bubbly. Broil for 1–2 minutes at the end for a golden top if desired.
Let the casserole rest for about 5 minutes before serving. Top with parsley and enjoy!

Video

Notes

I used Victoria Trading Company Marinara Sauce to make this low-carb spaghetti bake. The nutritional information was calculated using this sauce. I divided the casserole into 9 equal-sized servings.

Low Carb Spaghetti or Pizza Sauce Options Without Any Added Sugar

Rao’s Homemade Marinara Sauce – 4g net carbs per ½ cup
Rao’s Homemade Tomato BasilSauce– 3g net carbs per ½ cup
Lucini Italia Organic Tuscan Marinara Sauce – 3g net carbs per ½ cup
Lucini Italia Organic Rustic Tomato Basil – 3g net carbs per ½ cup
Mezzetta Napa Valley Homemade Marinara – 6g net carbs per ½ cup
ALDI Simply Selected Premium Marinara - 5g net carbs per ½ cup
Victoria Trading Company Marinara Sauce - 5g net carbs per 1/2 cup
Victoria Trading Company Marinara Sauce - 5g net carbs per 1/2 cup

Tips:

This is crucial. Make sure to squeeze all of the water out of the spaghetti squash. Place the roasted spaghetti squash on paper towels to squeeze out the moisture so that the keto spaghetti casserole will not be watery when it is baked. This step is VERY IMPORTANT.
Spaghetti squash is extremely hard to cut. To make this process easier, pierce the outside of the squash with a fork or knife several times and throw it in the microwave for approximately 3-5 minutes. This will soften the skin and make it easier to cut.

Nutrition