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Sausage and Mushroom Breakfast Casserole
5 from 6 votes

Sausage and Mushroom Breakfast Casserole

This low-carb Sausage and Mushroom Breakfast Casserole with spinach, feta, onion and garlic is big on flavor and so simple to prepare. Make it for any special occasion or weekend brunch.

Prep Time
15 mins
Cook Time
40 mins
Total Time
55 mins
Servings: 8 to 12 Servings
Calories: 182 kcal
Course: Breakfast
Cuisine: American

Ingredients

  • 2 Tbsp avocado oil
  • 1 yellow onion medium-sized
  • 16 ounces mushrooms chopped
  • ¾ tsp salt sea salt
  • 8 cloves garlic minced
  • 1 pound breakfast sausage
  • 5 ounces baby spinach
  • 6 ounces feta cheese
  • 12 egg large

Instructions

    Cup of Yum
  1. Preheat the oven to 350 degrees F and lightly spray a large (13” x 9”) casserole dish or baking dish with cooking spray.
  2. Heat the avocado oil over medium-high heat in a large nonstick skillet. After allowing the skillet to warm up for a minute or two, add the onion and sauté it for about 8 minutes, until it is golden-brown.
  3. Add the mushrooms and sea salt, stir well, and cover the skillet. Allow the mushrooms to cook, stirring occasionally, until they turn brown and much liquid has leached out, about 8 minutes.
  4. Remove the lid and stir in the garlic, followed by the ground breakfast sausage. Use a spatula to break up the ground turkey and continue cooking, stirring constantly, until the turkey is cooked through, about 5 to 8 minutes.
  5. Add the baby spinach to the skillet, cover, and allow it to cook until the spinach has wilted, about 2 to 3 minutes. 
  6. Stir the turkey and mushroom mixture well, then transfer it to the casserole dish, spreading it into an even layer. Sprinkle the feta cheese over everything.
  7. Crack the eggs into a large bowl and beat them until very well combined.
  8. Pour the egg mixture over the meat mixture evenly. If need be, you can stir everything around a bit to ensure the ingredients are evenly distributed.
  9. Bake on the center rack of the preheated oven for 40 to 50 minutes, or until the casserole has set up in the center and has cooked through.
  10. Allow the casserole to cool for 20 minutes before slicing into individual pieces and serving (this will allow for cleaner slices). Serve it with a dollop of sour cream or yogurt, hot sauce, crispy bacon, and chopped green onions for a lovely holiday breakfast.

Notes

  • Store any leftover breakfast casserole in an airtight container in the refrigerator for up to 5 days. You can also cover the casserole dish with plastic wrap to save it in the refrigerator.

Nutrition Information

Serving 1Slice (of 8) Calories 182kcal (9%) Carbohydrates 4g (1%) Protein 18g (36%) Fat 11g (17%) Fiber 1g (4%) Sugar 2g (4%)

Nutrition Facts

Serving: 8 to 12 Servings

Amount Per Serving

Calories 182

% Daily Value*

Serving 1Slice (of 8)
Calories 182kcal 9%
Carbohydrates 4g 1%
Protein 18g 36%
Fat 11g 17%
Fiber 1g 4%
Sugar 2g 4%

* Percent Daily Values are based on a 2,000 calorie diet.