Amazing Homemade Breakfast Casserole with Fluffy Biscuits

Amazing Homemade Breakfast Casserole with Fluffy Biscuits

Published on December 04, 2025

Recipe Information

  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Servings: 4
  • Difficulty: Easy

Introduction

Mornings just got a whole lot more delicious and comforting! Our Amazing Homemade Breakfast Casserole with Fluffy Biscuits is the ultimate way to start your day. This hearty dish combines all your savory breakfast favorites—fluffy eggs, crumbled sausage, melty cheese, and crisp vegetables—all nestled around tender, buttery biscuits. It’s perfect for a leisurely weekend brunch, a special holiday gathering, or even prepped ahead for an easier weekday morning. Get ready to impress your family and friends with this incredibly satisfying and easy-to-make casserole!

Ingredients

  • 1 pound breakfast sausage, mild or spicy (or bacon, cooked and crumbled)
  • 1 small yellow onion, chopped
  • 1 red bell pepper, chopped
  • 1 tablespoon olive oil
  • 10 large eggs
  • 1 1/2 cups milk (any kind works, whole or 2%)
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon garlic powder
  • 1/4 teaspoon dried thyme (optional)
  • 2 cups shredded cheddar cheese (or a cheddar-jack blend), divided
  • 1 (16.3 ounce) can refrigerated biscuit dough (8 large biscuits), cut into quarters
  • Fresh parsley, chopped, for garnish (optional)

Instructions

  1. Prepare the Meat and Vegetables: Preheat your oven to 375°F (190°C). In a large skillet over medium heat, cook the breakfast sausage, breaking it up with a spoon, until no longer pink. Drain off any excess grease and set aside. In the same skillet (or clean it), add olive oil. Sauté the chopped onion and red bell pepper until softened, about 5-7 minutes. Remove from heat.
  2. Whisk the Egg Mixture: In a large bowl, whisk together the eggs, milk, salt, black pepper, garlic powder, and dried thyme until well combined and frothy.
  3. Assemble the Casserole: Lightly grease a 9x13 inch baking dish. Spread the cooked sausage evenly over the bottom of the dish. Layer the sautéed onion and bell pepper over the sausage. Sprinkle 1 1/2 cups of the shredded cheese over the vegetables.
  4. Add the Biscuits: Scatter the quartered biscuit pieces evenly over the cheese layer.
  5. Pour and Bake: Pour the egg mixture evenly over the entire casserole, ensuring some of the liquid seeps around the biscuits. Sprinkle the remaining 1/2 cup of shredded cheese over the top.
  6. Bake: Bake for 30-35 minutes, or until the biscuits are golden brown, the eggs are set, and the casserole is bubbly. If the top is browning too quickly, you can loosely tent it with aluminum foil.
  7. Rest and Serve: Remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the casserole to set properly. Garnish with fresh chopped parsley, if desired. Serve warm.

Pro Tips & Notes

  • Make Ahead Magic: Assemble the casserole the night before! Cover and refrigerate it (without baking). In the morning, let it sit on the counter for 20-30 minutes while the oven preheats, then bake as directed, potentially adding an extra 5-10 minutes to the baking time.
  • Customization is Key: Feel free to swap the sausage for cooked bacon, diced ham, or even shredded chicken. For veggies, spinach, mushrooms, or green onions would also be delicious additions.
  • Biscuit Choices: While canned biscuits are a fantastic time-saver, you can certainly use homemade biscuit dough for an even more elevated flavor and texture. Just be sure to cut them into similar sized pieces.
  • Don't Overbake: Overbaking can lead to dry eggs. The casserole is done when the center is set and a knife inserted comes out clean.
  • Cheese Varieties: Experiment with different cheeses! Monterey Jack, Gruyere, or a sharp white cheddar can add a unique twist.

Nutrition Facts (per serving)

  • Calories: Approximately 450-550 per serving
  • Protein: Approximately 25-30g
  • Fat: Approximately 30-40g
  • Carbohydrates: Approximately 25-35g
  • Sodium: Approximately 800-1000mg
  • Fiber: Approximately 1-2g

Frequently Asked Questions

  • Q: Can I use fresh, uncooked biscuits from scratch? A: Yes, absolutely! If using homemade biscuit dough, cut it into 1-inch pieces and scatter them into the casserole as directed. The baking time should remain similar.
  • Q: How long can I store leftovers? A: Leftover breakfast casserole can be stored in an airtight container in the refrigerator for up to 3-4 days. Reheat individual portions in the microwave or oven until warmed through.
  • Q: Can I add other vegetables? A: Definitely! Sautéed mushrooms, spinach (squeezed dry), or even a handful of frozen corn (thawed) would be great additions. Just make sure to cook or thaw them before adding to prevent excess moisture.
  • Q: What if my biscuits don't get golden? A: Ensure your oven is fully preheated and consider placing the casserole on a lower rack for the first half of baking, then moving it up, or if needed, briefly broil for 1-2 minutes at the very end, watching carefully to prevent burning.

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