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Every January, as the holiday lights come down and the new year settles in, our family craves something that feels like a warm hug on a cold Monday morning. The third Monday of the month is special—Martin Luther King Jr. Day—and for us it has become synonymous with a leisurely mid-morning brunch, fuzzy socks, and this towering, soul-soothing casserole that marries flaky buttermilk biscuits with velvety sausage gravy. I started making it in 2014 after my neighbor, Mrs. Alberta, brought a similar pan to a community breakfast. One bite and I was hooked on the way the gravy naps into every nook of the biscuits, the way the eggs set into creamy clouds, and the way the cheddar bronzes on top like a tiny sun rising from the oven. Over the years I’ve tweaked it for make-ahead ease, added a kiss of hot sauce for gentle heat, and landed on a ratio of gravy-to-biscuit that guarantees zero dryness. If you’re looking for a centerpiece dish that lets you linger over coffee while the oven does the heavy lifting, this is it.
Why This Recipe Works
- Make-ahead magic: Assemble the night before; the biscuits soak up flavor like French toast.
- One-pan wonder: No precooking biscuits or gravy—everything bakes together.
- Balanced richness: Turkey breakfast sausage keeps it hearty without the food-coma.
- Feeds a crowd: Twelve generous squares disappear fast at potlucks.
- Freezer-friendly: Bake, cool, slice, wrap; reheat in toaster oven for 12 min.
- Customizable heat: Dial cayenne up or down so little ones and spice-lovers co-exist.
- Holiday symbolism: Layers represent unity—different ingredients coming together beautifully.
Ingredients You'll Need
Quality ingredients make this casserole sing. Start with refrigerated buttermilk biscuits—not the flaky layers, but the country-style that bake up squat and sturdy. They’ll absorb gravy without collapsing into mush. For the sausage, I use a pound of turkey breakfast sausage; the lower fat content prevents a greasy finished product yet still delivers that nostalgic sage-pepper punch. If you’re a pork household, choose a coarse-ground Jimmy Dean-style and drain it well.
Whole milk is non-negotiable for the gravy; anything leaner will break and look curdled after baking. Unsalted butter gives you control over seasoning—store-brand is fine, but European-style with 83 % fat melts silkier. A modest amount of flour thickens the roux; cook it until it smells like shortbread to avoid pasty flavor. Eggs act as the custardy binder; I blend eight large ones with a splash of heavy cream for extra insurance against curdling. Sharp white cheddar melts smoothly and browns like a dream, while a modest shower of Monterey Jack adds stretch. Finally, seasonings: kosher salt, freshly cracked black pepper, a whisper of cayenne, and a pinch of smoked paprika for depth that nods to Southern barbecue joints.
How to Make MLK Day Brunch Casserole with Biscuits and Sausage Gravy
Brown the sausage
Heat a 12-inch skillet over medium. Crumble in the sausage and cook 6–7 min, breaking it into pea-size bits, until no pink remains. Use a slotted spoon to transfer to a paper-towel-lined plate; reserve 1 Tbsp drippings in pan.
Build the roux
Add butter to the drippings; melt over medium. Whisk in flour and cook 2 min until blonde and nutty. Gradually pour in milk while whisking. Simmer 3 min until thick ribbons form. Season with salt, pepper, cayenne, and paprika.
Cube the biscuits
While gravy thickens, open the biscuit cans. Stack biscuits and cut each into quarters so you have 64 pieces. Slightly stale biscuits soak better, so leave them on the counter while you prep everything else.
Whisk custard
In a large bowl beat eggs, cream, ½ tsp salt, and ¼ tsp pepper until homogenous. You want no streaks of white or yolk so every bite is uniformly velvety.
Layer and coat
Butter a 9×13-inch baking dish. Scatter biscuit cubes evenly, then sprinkle sausage on top. Pour gravy slowly so it seeps down. Finally ladle custard over everything; press lightly with a spatula to submerge.
Cheese crown
Combine shredded cheddar and Jack; sprinkle over surface. The cheese forms a bronzed blanket that keeps moisture in while creating crispy lacy edges.
Chill or bake
Cover tightly with foil; refrigerate up to 24 hours (flavors deepen) or bake immediately. Remove from fridge 30 min before baking to take the chill off.
Bake low and slow
Preheat oven to 325°F. Bake covered 30 min, then uncover and bake 25–30 min more until center puffs and a knife inserted comes out clean. Rest 10 min for neat squares.
Expert Tips
Overnight magic
Assemble at night; the custard hydrates the biscuits so they bake up soufflé-light.
No curdle zone
Warm the milk to 100°F before adding to roux; cold milk shocks the starch and can break.
Biscuit size
Cut into 1-inch cubes; larger chunks stay doughy in the center.
Temperature probe
Bake until center registers 185°F; above 190°F the custard weeps.
Rest rule
Ten minutes of patience lets gravy thicken for tidy slices.
Freezer hack
Flash-cool squares on a rack, wrap in parchment + foil, freeze up to 2 months.
Variations to Try
- Vegetarian: Swap sausage for roasted mushrooms sautéed with smoked paprika and sage.
- Tex-Mex: Use chorizo, pepper-jack cheese, and add diced green chiles to custard.
- Low-carb: Replace biscuits with cauliflower gnocchi and use half-and-half instead of milk.
- Holiday greens: Fold in 2 cups chopped kale that’s been massaged with olive oil.
- Seafood spin: Sub cooked shrimp and crab for sausage; swap cheddar for Gruyère.
Storage Tips
Refrigerate: Cool completely, cut into squares, store in airtight container up to 4 days. Reheat covered at 300°F for 15 min or microwave 60–90 sec.
Freeze: Wrap individual squares in parchment, then foil, then into a zip bag. Label with date; best within 2 months. Thaw overnight in fridge before reheating.
Make-ahead: Assemble through step 6, cover tightly, refrigerate up to 24 hours. You may need to add 5 extra minutes to covered bake time if going straight from fridge.
Frequently Asked Questions
MLK Day Brunch Casserole with Biscuits and Sausage Gravy
Ingredients
Instructions
- Brown sausage: Cook sausage in skillet 6–7 min; drain and reserve 1 Tbsp drippings.
- Make gravy: In same skillet melt butter, whisk in flour 2 min, then milk; simmer until thick. Season.
- Prep biscuits: Quarter each biscuit yielding 64 pieces; let stand 5 min to dry slightly.
- Mix custard: Whisk eggs, cream, ½ tsp salt, ¼ tsp pepper until smooth.
- Assemble: Grease 9×13 pan. Layer biscuits, sausage, gravy, and custard. Top with cheeses.
- Bake: Cover with foil; bake at 325°F 30 min. Uncover and bake 25–30 min more until center is set and cheese is golden. Rest 10 min before slicing.
Recipe Notes
Casserole can be assembled up to 24 hours in advance. Bring to room temp 30 min before baking for even cooking.
