Biscuit Breakfast Casserole is the kind of breakfast that makes busy mornings much easier. Soft biscuit pieces are combined with eggs, savory breakfast sausage, cheddar cheese, and fresh green onions, then baked until the top is golden and the cheese is melted. It is hearty enough for a family breakfast but also works well for weekend brunch, holidays, or when you have guests at home. This version is inspired by the classic biscuit-and-egg casserole style, but the recipe below is written with simple ingredients and straightforward steps.
Why This Biscuit Breakfast Casserole Works
The beauty of this casserole is that everything comes together in one baking dish. The biscuits soak up some of the seasoned egg mixture while still keeping their soft, fluffy texture. Sausage adds a savory bite, cheddar brings richness, and green onions add a fresh contrast. You can also prepare the casserole ahead of time, making it especially handy when breakfast needs to be ready without much morning prep.
Ingredients
| Ingredient | Amount | Notes |
|---|---|---|
| Refrigerated biscuits | 16 oz | Cut each biscuit into quarters |
| Large eggs | 5 | Use at room temperature when possible |
| Milk | 1/4 cup | Whole, 2%, or another preferred variety |
| Breakfast sausage | 1 lb | Cooked and crumbled |
| Cheddar cheese | 1 cup | Shredded |
| Green onions | 6 | Chopped |
| Salt | 1/2 tsp | Optional, depending on the sausage and cheese |
| Black pepper | 1/4 tsp | Optional |
| Garlic powder | 1/2 tsp | Optional |
Also Read: Snickerdoodle Banana Bread
How to Make Biscuit Breakfast Casserole
1. Prepare the Sausage
Preheat your oven to 350°F (175°C). Cook the breakfast sausage in a skillet over medium heat until it is fully cooked and nicely browned. Break it into small crumbles as it cooks. Drain excess grease if necessary and set the sausage aside.
2. Make the Egg Mixture
Crack the eggs into a large mixing bowl and whisk them with the milk. Add the optional salt, black pepper, and garlic powder. Whisk until the mixture is smooth and evenly combined.
3. Cut the Biscuits
Cut each refrigerated biscuit into four pieces. A pizza cutter makes this step quick and easy, although a sharp knife works just as well.
4. Combine Everything
Add the biscuit pieces to the egg mixture and gently toss until they are coated. Stir in the cooked sausage, shredded cheddar cheese, and chopped green onions. Mix carefully so the biscuit pieces do not become crushed.
5. Bake
Lightly grease a 9 x 13-inch baking dish and spread the mixture evenly inside. Bake for about 28 to 35 minutes, or until the biscuits are cooked through, the eggs are set, and the top is lightly golden. If the center still looks wet, give it a few additional minutes in the oven.
6. Rest and Serve
Remove the casserole from the oven and let it rest for about 5 minutes before slicing. This short resting time helps the casserole settle and makes it easier to serve.
Also Read: Bisquick Coffee Cake Recipe
What You Can Do Better
A few small changes can make this casserole work even better for your family. Use freshly shredded cheddar if you want a smoother melt, and avoid adding too much salt because breakfast sausage and cheese can already be fairly salty. For extra vegetables, stir in sautéed bell peppers, mushrooms, or spinach after cooking them first to remove excess moisture. If you prefer a little heat, diced jalapeño or a few drops of hot sauce can be added to the egg mixture.
You can also change the meat depending on what you have available. Cooked bacon, diced ham, or turkey sausage can replace the breakfast sausage. For a different cheese flavor, try Monterey Jack, Colby Jack, mozzarella, or Pepper Jack.
Make Ahead Instructions
This casserole can be assembled ahead of time, which is useful for holidays and busy weekend mornings. Prepare the casserole as directed, cover the baking dish and refrigerate it overnight. When you are ready to bake, remove it from the refrigerator while the oven preheats and then bake until the center is completely set. Because the casserole is starting cold, it may need a few extra minutes in the oven.
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Storage and Reheating
Allow leftover casserole to cool before covering it and placing it in the refrigerator. Store leftovers for up to 3 to 4 days. Individual portions are convenient for quick breakfasts during the week.
For reheating, microwave one portion in short 30-second intervals until heated through. You can also reheat it in an air fryer at around 350°F for several minutes. Keep an eye on it so the biscuit edges do not become too brown.
Serving Suggestions
Serve this casserole on its own or add a few simple toppings. Salsa, hot sauce, sour cream, sliced green onions, or a spoonful of country-style gravy can all work well. For a fuller breakfast, serve it with fresh fruit, roasted potatoes, or a simple green salad.
Recipe at a Glance
| Prep Time | 15 minutes |
|---|---|
| Cook Time | 28–35 minutes |
| Total Time | About 45–50 minutes |
| Servings | 12 |
| Course | Breakfast or Brunch |
| Type | Egg and Biscuit Casserole |
Also Read: Blue Cheese Dressing
Nutrition Information
The following is an approximate estimate per serving and can vary depending on the biscuit brand, sausage, cheese, milk, and portion size used.
| Nutrient | Approximate Amount |
|---|---|
| Calories | 320–330 kcal |
| Carbohydrates | 19 g |
| Protein | 13 g |
| Total Fat | 21 g |
| Saturated Fat | 7 g |
| Cholesterol | 106 mg |
| Sodium | 680–690 mg |
| Fiber | 1 g |
| Sugar | 2 g |
| Calcium | About 110 mg |
| Iron | About 2 mg |
Frequently Asked Questions
Can I use bacon instead of sausage?
Yes. Cook the bacon until crisp, crumble it, and use it in place of the cooked breakfast sausage.
Can I add vegetables?
Yes. Sautéed spinach, mushrooms, bell peppers, or other vegetables can be added. Cook vegetables first so they do not release too much moisture into the casserole.
Can I prepare Biscuit Breakfast Casserole the night before?
Yes. Assemble the casserole, cover it, and refrigerate overnight. Bake it the next morning, allowing a little additional cooking time if needed.
What type of cheese can I use?
Cheddar is a simple choice, but Colby Jack, Monterey Jack, mozzarella, or Pepper Jack can also be used.
How do I know when the casserole is done?
The eggs should be completely set in the center, the biscuit pieces should be cooked through, and the top should have a light golden-brown appearance.
