Golden biscuit pieces, savory sausage, and a custardy egg base make this casserole the kind of breakfast that disappears fast. The biscuits bake up with crisp, buttery edges on top while the center stays tender and rich, which gives every bite a little crunch, a little softness, and a lot of garlic-cheddar comfort.
The trick is starting with the Cheddar Bay biscuits underbaked. That keeps them from turning dry or tough in the casserole and lets them finish soaking up the egg mixture without collapsing. The garlic herb butter goes on at the end, not before, so it stays fragrant and glossy instead of disappearing into the bake.
Below you’ll find the small details that matter here: how to keep the biscuit layer from going soggy, why the sausage should be fully cooked before it goes in, and what to do if you want to turn this into a make-ahead brunch dish.
The biscuits stayed fluffy instead of getting mushy, and the garlic butter on top after baking made the whole pan taste like a brunch restaurant dish.
Love a biscuit-and-egg breakfast bake? Save this Cheddar Bay Biscuit and Egg Casserole for the mornings when you want cheesy layers, sausage, and garlic butter in one pan.
Why the Biscuits Need to Go In Before They’re Fully Done
Most breakfast casseroles fail in one of two ways: the eggs set before the bread absorbs any flavor, or the bread turns into a soggy layer at the bottom. Underbaking the Cheddar Bay biscuits by a few minutes solves both problems. They hold their shape long enough to give you distinct bites, but they still have enough tenderness left to soak up the custard instead of fighting it.
The other mistake is treating the biscuit layer like a base that needs to be flat and neat. Break the biscuits into pieces after the first bake, then scatter them across the dish with a little space between pieces. That gives the eggs room to run through the casserole and bind everything together without making it dense.
- Underbaked biscuits — This is what keeps the texture soft in the center after the final bake. If you bake them all the way through first, they dry out before the eggs are done.
- Fully cooked sausage — Raw sausage releases too much grease and steam. Cook it first so the casserole sets cleanly and doesn’t get oily.
- Sharp cheddar — Mild cheese disappears into the eggs. Sharp cheddar gives the custard enough punch to stand up to the garlic herb butter.
What the Biscuit Mix, Eggs, and Butter Each Bring to the Pan
- Red Lobster Cheddar Bay biscuit mix — This is the shortcut that gives you the garlic-cheddar biscuit flavor people expect. A homemade biscuit works in a pinch, but you lose the seasoning packet and that specific texture that makes this casserole taste like itself.
- Breakfast sausage — Use a sausage you actually like eating on its own, because the flavor shows through. Mild or hot both work; hot sausage gives the casserole more edge, while mild keeps it family-friendly.
- Whole milk — Whole milk makes the custard richer and helps the eggs bake up soft instead of rubbery. You can use 2% if that’s what you have, but the finished casserole will be a little less lush.
- Reserved garlic herb butter packet — Don’t skip this. Brushing it on right after baking keeps the biscuit tops glossy and fragrant, and that finish is a big part of why this casserole tastes special.
Building the Layers So the Eggs Set Without Turning Rubbery
Give the biscuits their head start
Bake the biscuit mix until the pieces are set but still pale in the middle of the browning process. They should look dry enough to hold together, not fully golden. That short head start matters because the casseroles’ final bake is what finishes them. If they go too far in the first bake, they’ll soak up egg mixture like a sponge and lose their bite.
Layer the sausage over the biscuit pieces
Break the biscuits into rough chunks and spread them across the greased dish. Scatter the cooked sausage over the top so the meat gets tucked between biscuit pockets instead of sinking all the way to the bottom. That structure keeps each serving balanced. If your sausage is greasy, drain it well first or the bottom of the pan will feel heavy instead of custardy.
Whisk the custard until it’s completely smooth
Beat the eggs, milk, garlic powder, salt, and pepper until the mixture looks uniform, then stir in the cheese. You want the cheese evenly distributed so it doesn’t clump in one corner. Pour slowly over the casserole and let it settle into the gaps. If there are dry biscuit tops sticking up, that’s fine; they’ll brown beautifully and give the casserole its best texture.
Bake until the center barely moves
Slide the dish into a 375°F oven and bake until the edges are set and the center has only a slight wobble. The most common mistake here is overbaking while waiting for the middle to look perfectly firm. It keeps cooking after it comes out, and that carryover heat is what finishes the custard without drying the eggs out. Brush the garlic herb butter over the top immediately so it melts into the biscuits while they’re still hot.
How to Adapt This for a Different Table
Make it ahead for brunch
Assemble the casserole the night before, cover it, and refrigerate it unbaked. In the morning, let it sit on the counter while the oven preheats so the center isn’t ice-cold when it goes in. You may need a few extra minutes in the oven, and that’s normal.
Use bacon instead of sausage
Cook the bacon until crisp, then crumble it and use the same amount by weight. Bacon gives the casserole a smokier, saltier finish and a little less bulk than sausage, so the egg flavor comes through more clearly.
Dairy-light version
You can swap in 2% milk and a reduced amount of cheese, but the casserole won’t be quite as rich. The eggs will still set, though the custard will be a little less silky.
Storage and Reheating
- Refrigerator: Store leftovers covered for up to 4 days. The biscuits soften a little, but the flavor stays strong.
- Freezer: Freeze individual portions tightly wrapped for up to 2 months. The texture changes a bit after thawing, but it still reheats well for a quick breakfast.
- Reheating: Warm slices in a 325°F oven, covered loosely with foil, until hot in the center. Microwaving works for speed, but it can make the eggs tough and the biscuit edges rubbery.
Answers to the Questions Worth Asking
Cheddar Bay Biscuit and Egg Casserole
Ingredients
Equipment
Method
- Prepare the Cheddar Bay biscuit mix according to package directions, but bake for 10 minutes less than directed so the pieces are set but not fully golden. Visually, they should look firm and hold together with only light color.
- Preheat the oven to 375°F and grease a 9x13 dish. Add a thin, even coat so the biscuits release easily.
- Break the underbaked biscuits into pieces and arrange them across the bottom of the dish. Spread them out so every bite has biscuit coverage.
- Scatter the cooked and crumbled breakfast sausage over the biscuit pieces. Distribute it evenly to prevent dry pockets.
- Whisk the eggs, whole milk, garlic powder, salt, and black pepper until smooth. Keep whisking until no egg streaks remain.
- Stir in the shredded sharp cheddar, then pour the mixture over the casserole. Make sure the custard reaches the biscuit layer.
- Bake at 375°F for 35–40 minutes, until the eggs are set and the biscuits are golden. The center should not jiggle when gently shaken.
- Brush with the reserved garlic herb butter immediately after baking, then serve. Let the glaze glisten on top for the best flavor and shine.