Cowboy Butter Steak and Au Gratin Potato Casserole
Cowboy butter steak and Au Gratin Potato casserole is what happens when you take the flavors from the Cowboy Butter Steak Bites — garlic, Dijon, Worcestershire, lemon, red pepper flakes — and pour them over thinly sliced sirloin layered on top of a cheesy au gratin potato base. It bakes in one dish for about…
