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Overnight Make Ahead Biscuit Breakfast Casserole

Overnight Make Ahead Biscuit Breakfast Casserole for Cozy Mornings

This Overnight Make Ahead Biscuit Breakfast Casserole combines layers of savory sausage, creamy Gruyère cheese, and colorful peppers for a hearty breakfast.
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Prep Time 30 minutes
Cook Time 40 minutes
Resting Time 30 minutes
Total Time 1 hour 40 minutes
Servings: 8 slices
Course: Breakfast
Cuisine: American
Calories: 350
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 1 lb Ground Breakfast Sausage Adds heartiness and flavor; use brands like Jimmy Dean.
  • 1/2 cup Onion, finely diced Can be substituted with shallots for a milder flavor.
  • 1/2 cup Green Bell Pepper, diced Can be replaced with yellow or orange bell peppers.
  • 1/2 cup Red Bell Pepper, diced Feel free to replace it with another bell pepper variety.
  • 2 cups Gruyère Cheese, shredded Provides a rich, melty texture.
  • 6-8 Stale Biscuits, cut into quarters Day-old biscuits work best.
  • 6 Eggs, room temperature Essential for the creamy custard base.
  • 1 cup Half and Half Can be replaced with whole milk.
  • 1/2 tsp Kosher Salt Sea salt can be used if preferred.
  • 1/4 tsp Black Pepper Provides warmth and depth.
For Serving (Optional)
  • Fresh Fruit A refreshing complement; think berries or sliced apples.
  • Arugula Salad Light and peppery; toss with a vinaigrette.
  • Breakfast Potatoes Crispy roasted potatoes to round out your breakfast spread.

Equipment

  • Oven
  • 9x13-inch Baking Dish
  • Large skillet
  • Medium bowl

Method
 

Step-by-Step Instructions
  1. Prep your oven by preheating to 350°F (175°C) and greasing a 9x13-inch baking dish.
  2. In a large skillet over medium heat, cook ground breakfast sausage for about 4-5 minutes until golden brown.
  3. Add diced onion and bell peppers to the skillet and sauté for 3-4 minutes until softened.
  4. Layer quartered stale biscuits in the baking dish, followed by the sausage, sautéed vegetables, and Gruyère cheese on top.
  5. In a medium bowl, whisk together eggs, half and half, kosher salt, and black pepper until smooth.
  6. Pour the creamy egg mixture evenly over the layered ingredients in the baking dish.
  7. Let the casserole rest at room temperature for 30 minutes or refrigerate overnight.
  8. Bake in the preheated oven for 35-40 minutes until the center jiggles slightly but is set.
  9. Allow the casserole to cool for about 5 minutes and serve warm, sliced into portions.

Nutrition

Serving: 1sliceCalories: 350kcalCarbohydrates: 20gProtein: 15gFat: 25gSaturated Fat: 10gPolyunsaturated Fat: 2gMonounsaturated Fat: 8gCholesterol: 145mgSodium: 600mgPotassium: 300mgFiber: 1gSugar: 2gVitamin A: 15IUVitamin C: 50mgCalcium: 20mgIron: 10mg

Notes

For the best texture, use stale biscuits and let the casserole rest to soak up flavors before baking.

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