Sausage Gravy & Biscuit Casserole

This Sausage Biscuit Gravy Casserole is one of my all-time favorite breakfast recipes — hearty, comforting, and so easy to pull together. Thick, creamy sausage gravy topped with flaky, golden biscuits, all baked in one dish. It’s perfect for holiday mornings or any weekend you want something really satisfying on the table without a lot of fuss.

Why You’ll Love This

One pan, no juggling — everything bakes together so you’re not standing at the stove flipping biscuits and ladling gravy into individual bowls
Biscuits stay perfect — baking them on top keeps the insides fluffy and the tops golden, no soggy bottoms
Holds heat beautifully — stays warm in the pan far longer than plated biscuits and gravy ever would
Easy to serve a crowd — scoop and go, everyone gets biscuit and gravy in every bite
Make-ahead friendly — you can prep the gravy in advance and assemble right before baking

A Word About the Ingredients

The sausage matters. I know that sounds like something you put on a cooking show to sound smart, but I mean it — the flavor of your sausage is the backbone of the whole dish, and if you use a bland one you’re going to end up with a bland Casserole no matter how good your gravy technique is. I use Jimmy Dean breakfast sausage, the roll kind, but I’ve also made this with a spicier variety when I was feeling bold and it was honestly fantastic. If your family does turkey sausage or Chicken sausage, go ahead. It works. It’s not quite the same richness but it’s still good.
The biscuits — I use the big flaky canned ones, the 8-count. Don’t overthink it. I know there are people who will insist you make biscuits from scratch and if you want to do that, more power to you, but one of the things I love most about this recipe is that it doesn’t ask much of me. The can of biscuits is a feature, not a shortcut I’m ashamed of.
Whole milk makes the gravy genuinely creamy and thick. I’ve used 2% when that’s what I had and it’s fine, but there’s a richness to whole milk that you’ll notice.

Ingredients

1 pound breakfast sausage (roll style — I use Jimmy Dean, or whatever I grab)
About 1/3 cup flour, give or take
½ teaspoon salt
¼ teaspoon black pepper (I usually do a little more, but start here)
3½ cups whole milk — maybe a splash more if your gravy gets too thick
1 can (8 count) large flaky refrigerator biscuits

How to Make It

Preheat your oven to 350 degrees first so you’re not waiting around later.
Get a big skillet — I use my cast iron, which I know not everyone has, a regular heavy-bottomed pan is totally fine — and brown your sausage over medium heat. Break it up as it cooks. You want crumbles, not chunks. This takes maybe eight or ten minutes? I don’t time it. I just go until it’s cooked through and starting to get a little color on the edges.
Here’s the important part: do not drain the fat. I know. I know. But that fat is what you’re going to build your gravy with, and if you pour it off you’ll end up with something that tastes like flour and milk and not much else. Leave it in the pan. Sprinkle the flour over the sausage — all of it — and stir it around with a whisk or a wooden spoon for a minute or two. You’re cooking the flour into the fat, making what a fancy cooking show would call a roux. It’ll look kind of pasty and weird for a moment. That’s fine. Keep going.
Now add your milk. I pour it in slowly at first, whisking as I go, because if you dump it all in at once you can get lumps and then you’re spending ten minutes trying to whisk them out. Take your time. The gravy will start to tighten up and bubble — that’s what you want. Let it cook and bubble for maybe three to five minutes, still whisking off and on, until it’s thick and creamy and coats a spoon. Season with the salt and pepper. Taste it. Adjust. This is where you decide if you want more pepper.
Pour the whole thing into a 9×13 baking dish.
Now open your biscuits — which I still find mildly alarming every single time, I don’t know why I never get used to the pop — and tear each one into a few pieces. Not too small, you want them to be real biscuit-sized hunks. Scatter them all over the top of the gravy. Cover the surface pretty evenly, but don’t stress about perfection.
Bake at 350 for twenty to twenty-five minutes. You’re looking for the biscuit tops to turn deep golden brown. When you see that, you’re done. Let it sit for a few minutes before you dig in — it’s very hot right out of the oven and I’ve burned my tongue on this more times than I care to admit.

If You Want to Change It Up

Shredded cheddar cheese on top of the gravy before you add the biscuits is a very good idea. Melts right in and gets a little bubbly around the edges. A version with canned green chiles stirred into the gravy has a real nice kick to it — nothing overwhelming, just enough to wake you up.
Sautéed onion is good in there too. Mushrooms, if your people like mushrooms.

Leftovers (If There Are Any)

Let it cool completely before you cover it, or the biscuits get steamy and go soft in a way that’s not ideal. Refrigerate. It keeps well for two or three days. When you reheat it, I’d do it in the oven — covered with foil at around 325 — rather than the microwave, just because the biscuits hold up better that way. The microwave works in a pinch, though. I’ve done it.
One time I left half a pan of this on the counter overnight because I simply forgot about it in the chaos of the evening. Gone in the morning, had to start fresh. Learn from me.

Serve this with scrambled eggs if you want to go all out, or a bowl of fruit to balance it. Or just this. Honestly, just this is usually enough — it’s hearty in a way that carries you most of the morning.