There is nothing quite as deeply soul-warming on a crisp autumn weekend morning as the intoxicating aroma of sizzling country sausage, flaky golden biscuits, and velvety peppered cream gravy wafting through the house. This Overnight Biscuits and Gravy Breakfast Casserole takes everything you adore about the iconic Southern diner staple and transforms it into an effortless, crowd-pleasing one-dish masterpiece. Featuring fluffy buttermilk biscuit pieces baked directly into a rich, homemade country sausage gravy infused with savory eggs and melted sharp cheddar cheese, this bake delivers pure comfort food satisfaction straight from oven to table without anyone standing over a hot stovetop flipping eggs.
While traditional biscuits and gravy requires balancing a simmering skillet of gravy, baking delicate biscuits, and frying separate eggs all at once, this casserole ingeniously bakes every element into a unified, sliceable savory strata. As the casserole bakes, the raw biscuit dough puffs dramatically, absorbing the rich sausage-infused pan fond and silky egg custard while forming crisp, buttery crowns on top. The sharp cheddar cheese melts seamlessly into the crevices, balancing the peppery heat of the country sausage with rich, gooey dairy richness that holds each generous slice together cleanly on the plate.
Why You’ll Love This Recipe
- Effortless Make-Ahead Convenience: Fully assemble the entire casserole the night before, cover, and chill in the refrigerator—simply pop it into the oven when you wake up for stress-free morning hosting.
- Unbeatable Flavor & Texture Harmony: Pillowy biscuit pieces, creamy seasoned egg custard, savory crumbled pork sausage, and bubbly sharp cheddar create a symphony of textures in every forkful.
- Scratch-Quality Sausage Gravy in Minutes: By browning the sausage and building the roux directly in the same pan, you harness every drop of flavorful pan drippings for a rich, peppery country gravy that rivals any Southern diner.
- Feeds a Crowd with Zero Morning Cleanup: Slices into 8 hearty portions with just one baking dish and a single skillet to wash, making it ideal for Thanksgiving morning, Christmas brunch, football game days, or family sleepovers.
Key Ingredients & Smart Swaps
- Refrigerated Flaky Buttermilk Biscuits: A 16.3-ounce can of Pillsbury Grands Flaky Layers (or Southern Homestyle) provides the ideal structural lift and flaky lamination. You can also use scratch-made buttermilk biscuit dough cut into 1-inch pieces.
- Ground Country Breakfast Sausage: Use a quality mild pork sausage like Jimmy Dean, Bob Evans, or your favorite local butcher blend. For an extra kick, swap in spicy hot sausage; for a leaner profile, ground turkey breakfast sausage works wonderfully.
- All-Purpose Flour & Real Butter: Combined with the rendered sausage drippings, flour and butter create the golden roux foundation that thickens whole milk into an ultra-velvety white gravy that never separates or turns watery.
- Whole Milk & Heavy Cream: Whole milk provides the classic diner gravy body, while a splash of heavy cream whisked into the eggs creates a custard that keeps the bottom biscuit pieces impossibly tender and soufflé-soft.
- Sharp Cheddar Cheese: Freshly grate a block of extra sharp yellow or white cheddar for superior meltability and a bold, tangy punch that cuts through the rich gravy. Avoid pre-bagged cheese, which is coated in starch that prevents smooth melting.
- Freshly Cracked Black Pepper: The signature hallmark of classic Southern sawmill gravy. Use coarse freshly cracked peppercorns rather than pre-ground pepper for aromatic warmth and bold rustic speckles.
Step-by-Step Cooking Walkthrough
1. Brown the Country Sausage: Set a large heavy-bottomed skillet over medium heat. Add the crumbled pork sausage and cook for 6 to 8 minutes, breaking it into bite-sized bits with a wooden spatula until richly browned and sizzling. Keep all the flavorful pan drippings in the skillet.
2. Whisk the Velvety Country Gravy: Melt 2 tablespoons of butter into the sausage drippings over medium-low heat. Sprinkle in the flour and cook for 1 to 2 minutes, stirring constantly to eliminate raw flour flavor. Slowly pour in the warm whole milk in a steady stream while whisking vigorously to dissolve any lumps. Simmer for 3 to 4 minutes until thick, bubbly, and glossy. Season generously with garlic powder, onion powder, kosher salt, and freshly cracked black pepper.
3. Layer the Biscuits, Eggs, and Cheddar: Quarter each raw biscuit and scatter half evenly across the bottom of a greased 9×13-inch baking dish. Sprinkle with 1 cup of grated sharp cheddar. Whisk together 6 eggs with heavy cream and pour evenly over the biscuit layer. Top with the remaining biscuit pieces.
4. Ladle Gravy and Bake: Spoon the warm sausage pepper gravy evenly across the entire casserole, ensuring all biscuit crowns receive a light glaze of gravy. Shower with the remaining cup of cheddar cheese. Bake uncovered at 375°F (190°C) for 32 to 35 minutes until the biscuit crowns are golden brown and puffed, and the egg custard in the center is fully set.
3 Chef Secrets for Perfect Results
1. Warm the Milk Before Adding to the Roux: Pouring cold refrigerator milk into hot roux causes the fat to seize into stubborn lumps. Gently heat your milk in the microwave for 45 seconds or in a small saucepan until lukewarm; it will emulsify into a silky, lump-free gravy within seconds.
2. Layer Half the Biscuits Above the Gravy: Do not completely submerge all biscuit dough under gravy. Keeping the top biscuit pieces partially exposed allows the oven’s convection heat to crisp and brown their tops into flaky, buttery crowns while the bottom biscuits absorb the egg custard and gravy.
3. Give the Casserole a 10-Minute Resting Window: Resist the urge to slice immediately out of the oven! Letting the casserole rest on a wire rack for 8 to 10 minutes allows the bubbling egg custard and molten cheese to settle, giving you clean, photogenic square slices that hold together gorgeously.
What to Serve With Biscuits and Gravy Casserole
- Fresh Fruit & Citrus: A bright bowl of fresh berries, melon skewers, or broiled ruby red grapefruit provides a refreshing, vibrant contrast to the rich savory gravy and melted cheese.
- Crisp Smoked Bacon: Although the casserole is loaded with savory sausage, serving extra strips of thick-cut applewood smoked bacon or crispy breakfast potatoes satisfies the heartiest morning appetites.
- Morning Beverages: Freshly squeezed Florida orange juice, cold-brew coffee with hazelnut cream, or a pitcher of spicy Bloody Marys with pickled garnishes turn this bake into an unforgettable brunch celebration.
Storage, Freezing & Reheating Instructions
- Overnight Make-Ahead Instructions: Assemble the casserole fully through Step 3 (biscuits, eggs, gravy, and cheese). Wrap the baking dish tightly with plastic wrap and aluminum foil and refrigerate for up to 14 hours. In the morning, let the dish sit on the counter for 20 minutes while preheating the oven, then bake at 375°F (190°C) for 38 to 42 minutes until bubbly and golden.
- Refrigeration: Transfer completely cooled leftover squares into an airtight glass container or wrap tightly with foil. Store in the refrigerator for up to 4 days.
- Gentle Reheating: For the crispiest biscuit tops, reheat individual squares in a toaster oven or air fryer at 350°F (175°C) for 5 to 7 minutes. Alternatively, microwave on medium power for 60 to 90 seconds until heated through.
- Freezing: You can freeze fully baked and cooled casserole slices individually wrapped in parchment paper and foil inside a freezer zip-top bag for up to 2 months. Thaw overnight in the fridge and reheat in a 350°F oven for 15 minutes.
Overnight Biscuits and Gravy Breakfast Casserole with Savory Sausage and Cheese
Ingredients
Method
- Preheat & Prep Pan: Preheat your oven to 375°F (190°C). Generously grease a 9×13-inch ceramic or glass baking dish with softened butter or nonstick cooking spray.
- Brown the Sausage: In a large skillet set over medium heat, add the ground breakfast sausage. Cook for 6 to 8 minutes, breaking it into bite-sized morsels with a wooden spoon, until nicely caramelized and fully cooked through. Do not drain the rendered fat.
- Make the Country Gravy: Reduce heat to medium-low. Add 2 tablespoons of butter to the skillet with the sausage fat until melted. Sprinkle the 1/3 cup of flour over the meat and stir continuously for 1 to 2 minutes to cook out the raw flour flavor and form a roux. Gradually pour in the warm whole milk in a steady stream while whisking constantly. Bring to a gentle simmer and cook for 3 to 5 minutes until thick, velvety, and bubbly. Season with garlic powder, onion powder, salt, and generous cracked black pepper. Remove from heat.
- Whisk the Egg Mixture: In a medium mixing bowl, whisk together the 6 eggs, 1/3 cup heavy cream, salt, and pepper until completely smooth and lightly frothy.
- Assemble the Casserole: Cut each refrigerated buttermilk biscuit into 4 quarters. Arrange half of the raw biscuit pieces in a single layer across the bottom of the prepared 9×13-inch baking dish. Sprinkle with 1 cup of shredded sharp cheddar cheese. Pour the whisked egg mixture evenly over the biscuits. Top with the remaining biscuit pieces, then ladle the warm sausage gravy generously across the entire casserole, ensuring every biscuit piece is lightly kissed with gravy. Finish with the remaining 1 cup of sharp cheddar cheese.
- Bake to Golden Perfection: Bake uncovered at 375°F (190°C) for 32 to 35 minutes, until the biscuit tops are deep golden brown, the cheese is melted and bubbling at the edges, and a knife inserted into the center emerges clean without wet egg custard. (If the tops brown too quickly before 25 minutes, tent loosely with aluminum foil).
- Rest, Garnish & Serve: Remove from the oven and let rest on a wire rack for 8 to 10 minutes to allow the eggs and rich gravy to set slightly. Garnish with freshly snipped chives and extra cracked black pepper. Slice into 8 generous squares and serve piping hot!
Nutrition
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Let us know how it was!Frequently Asked Questions
Can I make this biscuits and gravy casserole ahead of time?
Yes! This recipe is engineered for overnight assembly. Prepare the entire dish the evening before, cover tightly with foil, and store in the refrigerator overnight. Bake straight from the fridge the next morning, adding approximately 5 to 7 extra minutes to the bake time until the center is piping hot and set.
Can I use homemade biscuits instead of canned biscuit dough?
Absolutely. If using homemade buttermilk biscuit dough, roll the dough out to 3/4-inch thickness, cut into 1-inch squares, and layer into the casserole exactly as directed. Scratch buttermilk biscuits yield exceptional tenderness and buttery flavor.
Why is my breakfast casserole soggy in the center?
A soggy casserole occurs if the egg custard has not fully set or if the biscuits were overcrowded in too small of a dish. Always use a full 9×13-inch pan, ensure your oven is accurately preheated to 375°F (190°C), and test the center with a paring knife—it should emerge clean without wet egg before removing from the oven.
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