Keto Southern Squash Casserole

Looking for a good low carb or keto dish to bring to a potluck or large gathering? This Low Carb Squash Casserole is the answer. No one will even know that you are on a special diet! This is also a good way to introduce low carb foods to your friends and family in a painless way.
Course Dinner, Lunch, Main Course, Side Dish
Cuisine American
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings 8
Calories 208 kcal
Author yvonne


  • 4 tablespoons butter or ghee
  • 6 cups diced yellow squash
  • ½ cup diced onion
  • 3 eggs
  • 1 cup heavy whipping cream
  • 1 teaspoon Himalayan sea salt
  • ½ teaspoon black pepper
  • ¼ teaspoon ground nutmeg
  • ¼ teaspoon cayenne pepper
  • ¼ cup grated parmesan cheese


  1. Preheat oven to 350 degrees F
  2. In a skillet, melt butter or ghee over medium heat until pan is hot
  3. Add squash and onion and saute until just tender.
  4. Place the squash mixture evenly into the bottom of of a 9”x 13” glass dish
  5. In a mixing bowl combine the rest of the ingredients except for the grated parmesan cheese
  6. Mix well
  7. Pour the mixture over the squash
  8. Top with the grated Parmesan cheese
  9. Bake for approximately 45 minutes until cheese is browned and casserole is set. Time will vary depending on how hot your oven runs.
  10. Let set for 10-15 minutes.
  11. Serve either warm or at room temperature.

Recipe Notes

This casserole can be made ahead of time and refrigerated for a quick and easy weekday side. You can also add in some chopped bacon and/or spicy crumbled sausage to make it a satisfying main course. For a side dish, this squash casserole will serve 12. But if you are planning on serving it as a main dish with added pork or turkey sausage, it will probably only serve 8. Of course this is all dependant on just how hungry you are!