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gluten free breakfast casserole
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Gluten Free Breakfast Casserole

This hearty Gluten Free Breakfast Casserole is a cheesy, make-ahead dream that takes the stress out of your morning! Packed with savory sausage, eggs, and golden hash browns, it’s a family-favorite protein boost that’s perfect for holiday brunches or easy meal prep.
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Prep Time 20 minutes
Cook Time 55 minutes
Chilling Time 8 hours
Total Time 9 hours 15 minutes
Servings: 12 servings
Course: Breakfast
Cuisine: American
Calories: 285
Ingredients Equipment Method Nutrition Notes

Ingredients
  

  • 1 lb Ground breakfast sausage Double-check that it’s certified gluten-free!
  • 3 cups Frozen shredded hash browns Thawed and patted dry to keep things crispy.
  • 1.5 cups Sharp cheddar cheese Freshly shredded melts so much better than the bagged kind.
  • 8 large Eggs Farm fresh is lovely if you can find them!
  • 1 cup Whole milk For that rich, creamy texture.
  • ½ cup Yellow onion Diced finely.
  • ½ cup Bell pepper Any color works, but red adds a beautiful pop.
  • 1 teaspoon Garlic powder
  • ½ teaspoon Smoked paprika Adds a tiny hint of "hidden" depth.
  • ½ teaspoon Salt
  • ¼ teaspoon Black pepper
  • 1 tablespoon Fresh parsley Chopped for a bright garnish.

Equipment

  • 1 9x13 Baking Dish I prefer glass or ceramic for even heat distribution!
  • 1 Large skillet For browning your sausage and softening those veggies.
  • 1 Whisk To get those eggs nice and fluffy.
  • 1 Meat thermometer The secret to a perfectly set center, no more guessing!

Method
 

  1. Start by lightly greasing your 9x13 baking dish with a little butter or cooking spray. I always feel like this is the foundation of a good meal, nobody likes losing those cheesy bits to the bottom of the pan!
  2. In your large skillet over medium-high heat, cook and crumble the ground breakfast sausage. It smells amazing already, doesn't it? Make sure it's fully browned with no pink left, then drain any extra fat so the casserole stays light and delicious.
  3. In the same skillet (using those leftover flavors!), toss in the yellow onion and bell pepper. Sauté them until they’re soft and translucent. This takes about 4-5 minutes and adds so much sweetness to the dish.
  4. Spread those thawed frozen shredded hash browns in an even layer across the bottom of your dish. Top them with your cooked ground breakfast sausage and those lovely sautéed veggies.
  5. In a large bowl, whisk together the eggs, whole milk, garlic powder, smoked paprika, salt, and black pepper. Give it a good workout until there are no streaks left—this ensures every bite is perfectly seasoned.
  6. Slowly pour your egg mixture over the layers. Sprinkle that sharp cheddar cheese all over the top like a blanket. Cover it tightly and pop it in the fridge overnight. This is where the magic happens and the flavors really get to know each other!
  7. In the morning, let the dish sit on the counter for 20 minutes while you preheat the oven to 350°F. Bake uncovered for 45-55 minutes. You’re looking for a golden, bubbling top and a center that doesn't jiggle. Use your meat thermometer to ensure it hits 165°F!
  8. Let it rest for 5 minutes (I know it’s hard to wait!), sprinkle with fresh parsley, and serve. This little rest helps the slices come out clean and beautiful!

Nutrition

Serving: 1sliceCalories: 285kcalCarbohydrates: 12gProtein: 16gFat: 19gSaturated Fat: 9gPolyunsaturated Fat: 2gMonounsaturated Fat: 7gCholesterol: 165mgSodium: 580mgPotassium: 290mgFiber: 1gSugar: 2gVitamin A: 550IUVitamin C: 12mgCalcium: 180mgIron: 1.5mg

Notes

The Dry Secret: Always pat your hash browns dry with a towel after thawing. It’s the best way to avoid a watery casserole!
Make it Early: I really recommend the full overnight soak, but if you're in a pinch, 4 hours will still give you a great result.
Leftovers: These slices are actually amazing the next day. Reheat in the microwave for 60 seconds with a damp paper towel over the top to keep the eggs moist.
Variations: Feel free to swap the sausage for bacon or add a handful of spinach to the sauté step for a boost of greens!
Tried this recipe?Let us know how it was!