French Dip Biscuit Casserole - Super Tasty Recipes

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Prep Time:10

Cook Time:30

Total Time:40

Ingredients

2 tbsp unsalted butter
1 small yellow onion diced
2 cloves of garlic
2 tbsp of all purpose flour
2 cups of beef broth
1 tbsp of Worcestershire sauce
1 tsp onion powder
1 tsp garlic powder
½ tsp black pepper
½ tsp salt
1 lb deli roast beef roughly chopped
12 slices of provolone cheese
2 8 count cans of refrigerated biscuits

Instructions

Step 1: Heat the Oven and Prepare the Dish - Preheat your oven to 350°F and coat a 9x13 baking dish with nonstick cooking spray. I like to do this first because once the beef mixture is ready, you want to move right into layering while everything is warm and saucy. A sprayed dish also makes serving easier later, especially around the cheesy edges where casseroles love to cling.
Step 2: Soften the Onion in Butter - Melt the butter in a large skillet over medium heat, then add the diced onion. Let it cook for about 8 to 10 minutes, stirring now and then, until the onion softens and turns lightly golden. This step gives the casserole that gentle sweetness you expect from a good French dip. Do not rush it too much. The onion is small, but it does a lot of the heavy lifting for flavor.
Step 3: Add Garlic and Flour - Stir in the minced garlic and all purpose flour, then cook for about 1 minute. The garlic wakes up in the butter, and the flour coats everything so it can thicken the broth in the next step. Keep stirring so the flour does not sit in one spot. You are not trying to brown it deeply here. You just want to cook off that raw flour taste.
Step 4: Whisk in the Beef Broth - Slowly pour in the beef broth while whisking or stirring steadily. Adding it slowly helps the flour blend into the liquid without clumps. Once the broth looks smooth, stir in the Worcestershire sauce, onion powder, garlic powder, black pepper, and salt. Let the mixture simmer for 3 to 4 minutes, just until it thickens a little and starts looking glossy. It should be saucy enough to coat the beef but not so thick that it turns pasty.
Step 5: Stir in the Roast Beef - Add the chopped deli roast beef to the skillet and stir until every piece is coated in the gravy. Let it warm through for a minute or two. Since deli roast beef is already cooked, you are really just helping it soak up all that savory flavor. I like the beef roughly chopped because it makes the casserole easier to scoop and gives you tender pieces in every bite.
Step 6: Layer the Beef and Cheese - Spread the beef and gravy mixture evenly into your prepared baking dish. Lay the provolone slices over the top, covering as much of the beef as you can. The cheese melts into the gravy as it bakes, creating that creamy middle layer that makes this casserole feel extra cozy. If a few slices overlap, that is fine. Nobody at my table has ever complained about an extra cheesy corner.
Step 7: Split and Arrange the Biscuits - Separate each biscuit in half horizontally so you have thinner biscuit layers. Arrange the biscuit halves evenly over the cheese, covering most of the casserole. This little move makes a big difference because whole biscuits can stay doughy underneath in a saucy casserole. Thinner biscuits bake more evenly, give you more topping, and still come out soft inside with golden tops.
Step 8: Bake Until Golden and Bubbling - Bake the casserole for 30 to 35 minutes, until the biscuits are golden brown and cooked through. Look for bubbling around the edges and biscuit tops that feel set, not soft and doughy. If your oven runs a little cool, give it a few extra minutes. Once it comes out, let it sit for 5 minutes before serving so the gravy settles slightly and the scoops hold together better.
Step 9: Serve with Warm Au Jus - Warm the prepared au jus and serve it on the side for dipping. This is the part that makes the whole meal feel like a French dip instead of just a beef and biscuit casserole. Spoon a portion onto each plate, then let everyone drizzle or dip as they like. Around here, the biscuit edges usually get dunked first.

Notes

Substitutions

Swiss cheese: Use Swiss instead of provolone if you want a sharper, nuttier flavor.
Mozzarella cheese: Use mozzarella for a milder, stretchier cheese layer that kids often enjoy.
Leftover roast beef: Thinly sliced leftover roast beef works well if you chop it into bite size pieces first.
Low sodium broth: Choose low sodium beef broth if your deli roast beef is already salty.
Crescent dough: Use crescent roll dough in place of biscuits for a softer, lighter topping.
Jarred gravy: Use beef gravy in a pinch, but taste before adding extra salt.

Variations

Extra onion version: Cook a second onion with the first one if your family loves that sweet, savory onion flavor.
Mushroom beef casserole: Add sliced mushrooms to the skillet with the onion and cook until softened.
Peppery version: Add a little extra black pepper for a bolder, deli style bite.
Horseradish drizzle: Serve with a small bowl of creamy horseradish sauce for the grown ups.
Garlic butter biscuit topping: Brush the biscuits with melted butter and a pinch of garlic powder after baking.
Loaded French dip bake: Add sautéed bell peppers for a sandwich shop style twist.

Tips and Tricks

Split the biscuits: Thinner biscuit layers bake more evenly and give you better coverage across the casserole.
Do not skip the simmer: Letting the gravy simmer for a few minutes helps it thicken and cling to the roast beef.
Taste before salting more: Deli roast beef and broth can both be salty, so taste the gravy before adding anything extra.
Let it rest: A short rest after baking helps the cheese and gravy settle so serving is less messy.
Watch the biscuit centers: The tops may brown before the centers are done, so check the middle biscuits before pulling the dish out.
Use a large skillet: A roomy skillet makes it easier to stir the roast beef into the gravy without spilling over the sides.

Serving Ideas

Simple green salad: A crisp salad with a tangy dressing balances the rich beef and cheese.
Roasted green beans: Green beans add color and a fresh bite next to the warm casserole.
Steamed broccoli: Broccoli is easy, familiar, and good for soaking up a little extra gravy.
Pickles on the side: Dill pickles cut through the richness and make the meal feel sandwich inspired.
Potato wedges: Serve crispy potato wedges if you want a hearty diner style dinner.
Fruit salad: A cold fruit salad is a nice sweet contrast for kids and grown ups.

Storage and Make Ahead Tips

Refrigerate leftovers: Store leftovers in an airtight container in the fridge for 2 to 3 days.
Reheat gently: Warm portions in the oven or air fryer when possible so the biscuit topping has a chance to perk back up.
Microwave for speed: The microwave works for quick lunches, though the biscuits will be softer.
Store au jus separately: Keep leftover au jus in a separate container so the casserole does not get too wet.
Prep the filling early: Make the beef and gravy mixture ahead, then add cheese and biscuits right before baking.
Avoid fully assembling too soon: Raw biscuits can absorb moisture from the filling, so wait to place them on top until you are ready to bake.

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Servings: servings