Golden biscuit tops, savory sausage, and a soft baked egg custard make this casserole the kind of breakfast people remember. The biscuits don’t disappear into the filling; they stay in the dish as tender, garlicky pockets with crisp edges, which gives every bite a mix of fluffy, cheesy, and rich. That contrast is what keeps this one on repeat.
The key is underbaking the biscuit mix before it goes into the casserole. If the biscuits are fully baked first, they dry out in the oven and lose that soft center that makes this dish work. Breaking them into pieces also helps them catch more of the egg mixture, so the bottom sets into something almost bread-pudding-like while the top browns around the edges.
Below, I’m walking through the one part that matters most: how to keep the biscuit pieces from turning heavy or soggy. I’ve also included a few smart swaps for the sausage, cheese, and milk so you can adjust it without losing the texture that makes this breakfast bake stand out.
The biscuit pieces stayed fluffy on top but soaked up just enough egg underneath, and the garlic butter on top made the whole pan taste like something from a brunch restaurant.
Cheddar Bay Biscuit and Egg Casserole: save this one for a cheesy brunch bake with sausage, golden biscuit tops, and garlic butter on every bite.
The One Move That Keeps the Biscuits from Getting Heavy
The mistake with biscuit casseroles is treating the biscuit pieces like bread cubes and letting them fully bake before they ever meet the egg mixture. That sounds harmless, but it leaves you with dry, stiff tops and a filling that can’t soak in evenly. Underbaking the biscuits by about five minutes keeps them tender enough to finish in the casserole without losing structure.
The other part that matters is how you cut them. Big chunks leave gaps that cook unevenly, while tiny pieces melt into the custard and disappear. Aim for rough bite-size pieces so the eggs can run around them and set into a cohesive bake without turning dense.
- Underbaked biscuits — They finish cooking in the oven with the eggs, which keeps the texture soft instead of dry.
- Breakfast sausage — This brings the salty, savory base. If it’s greasy, drain it well or the casserole can turn slick at the bottom.
- Sharp cheddar — Mild cheese fades into the custard. Sharp cheddar holds its own against the sausage and garlic butter.
- Garlic herb butter packet — Don’t skip the finish. Brushing it on right after baking gives the tops their signature Red Lobster-style flavor and shine.
What Each Part Is Doing in the Dish
- Cheddar Bay biscuit mix — This is the backbone of the casserole, not just a shortcut. The seasoning packet and buttery dough give the dish its signature taste, and there isn’t a true substitute that captures the same garlic-cheddar profile. If you need a stand-in, use another savory biscuit mix, but expect a softer, less distinctive finish.
- Breakfast sausage — The sausage gives the casserole its savory depth and keeps it from tasting flat. Pork sausage works best because the fat helps the flavor carry through the egg custard, but turkey sausage can be used if you want a lighter dish. Cook it fully first and drain off excess grease so the casserole sets properly.
- Eggs and whole milk — This mixture sets into the custard that holds everything together. Whole milk gives a richer, softer texture than skim milk, and that matters here because the biscuit pieces absorb some of the liquid as they bake. You can use half-and-half for an even richer result, but don’t go much heavier than that or the center can stay loose too long.
- Sharp cheddar — It melts into the eggs and adds pockets of saltiness throughout the bake. Pre-shredded cheese works, but freshly shredded melts more smoothly if you have the minute to do it. Use a bold cheddar, not a mild one, or the flavor gets lost under the biscuit seasoning.
Building the Casserole So the Center Sets and the Tops Stay Golden
Starting with the Biscuit Layer
Break the underbaked biscuits into rough pieces and spread them across the greased dish in an even layer. You want coverage without packing them down, because tight layering blocks the egg mixture from sinking through. If there are a few open spaces, that’s fine; the custard will settle in as it bakes.
Adding the Sausage and Custard
Scatter the cooked sausage over the biscuits, then whisk the eggs, milk, garlic powder, salt, and pepper until fully blended. Stir the cheddar into the egg mixture before pouring it in so the cheese isn’t floating only on top. Pour slowly and let it seep into the corners; if the pan looks flooded at first, give it a minute before moving it to the oven.
Knowing When It’s Done
Bake until the center is set and no longer sloshes when you nudge the pan, while the edges are golden and the biscuit tops have puffed. If the top browns too quickly, lay a loose piece of foil over it for the last few minutes. Brush on the reserved garlic herb butter the second it comes out so it melts into the hot biscuit surface instead of sitting on top in streaks.
How to Adjust This Without Losing the Brunch-Casserole Feel
Make it gluten-free with a gluten-free biscuit mix
Use a gluten-free savory biscuit mix that bakes up sturdy enough to hold the egg custard. The texture won’t be quite as fluffy as the original, but you’ll still get the same layered, hearty breakfast bake if you underbake the biscuits a little and finish them in the casserole.
Skip the sausage for a vegetarian version
Leave out the sausage and add sautéed mushrooms, peppers, or spinach instead. You’ll lose some of the salty richness, so add a little extra cheddar and a pinch more salt to keep the casserole from tasting thin.
Use turkey sausage for a lighter bake
Turkey sausage works well if you cook it until browned and crumbly. It brings less fat than pork sausage, so the casserole will taste a little leaner and slightly less rich, but the eggs and cheddar still keep it satisfying.
Make it ahead for morning assembly
You can cook the sausage and bake the biscuit layer a little ahead, then assemble the casserole just before baking. If you want to refrigerate the assembled dish overnight, expect a slightly softer biscuit texture, but it still bakes up nicely if you give it a few extra minutes in the oven.
Storage and Reheating
- Refrigerator: Store leftovers covered for up to 4 days. The biscuit pieces soften a bit, but the flavor holds well.
- Freezer: Freeze portions tightly wrapped for up to 2 months. The texture is softer after thawing, but it still reheats well if you want a make-ahead breakfast.
- Reheating: Warm individual portions in the oven at 325°F until heated through. The microwave works in a pinch, but it can turn the eggs rubbery and make the biscuit pieces tough.
Questions I Get Asked About This Recipe
Cheddar Bay Biscuit and Egg Casserole
Ingredients
Equipment
Method
- Prepare the Cheddar Bay biscuit mix according to the box directions, then bake it for 10 minutes less than directed so the biscuits are set but not fully golden. Visual cue: the tops should look firm but still pale.
- Preheat the oven to 375°F and grease a 9x13 dish. Visual cue: the baking dish should be lightly coated so the custard releases cleanly.
- Break the underbaked biscuits into pieces and arrange them across the bottom of the greased dish. Visual cue: the bottom should be covered in biscuit chunks.
- Scatter the cooked, crumbled breakfast sausage over the biscuit pieces. Visual cue: you should see sausage throughout the biscuit layer.
- Whisk the eggs, whole milk, garlic powder, salt, and black pepper, then stir in the shredded cheddar. Visual cue: the mixture should turn uniformly yellow and glossy.
- Pour the egg-cheddar mixture over the casserole. Visual cue: biscuit pieces and sausage should be mostly submerged.
- Bake at 375°F for 35–40 minutes until the eggs are set and the biscuits are golden. Visual cue: the center should not jiggle and the biscuit tops should look browned.
- Brush the casserole with the reserved garlic herb butter packet immediately and serve. Visual cue: the butter should glisten across the golden biscuit tops.