01 -
Begin by browning your ground beef together with finely diced onions in a skillet. Once cooked through, drain off any excess fat.
02 -
Fold in your marinara sauce. Season with salt and pepper to taste. Your beef mixture is now ready.
03 -
In a medium-sized bowl, whisk together the sour cream and mozzarella cheese until well combined.
04 -
Pour the beef mixture as the base into a 2 1/2 quart casserole dish. Gently spread your cheese blend over it in an even layer.
05 -
Unfold the crescent roll dough and lay it as a blanket over the cheese layer, making sure to cover the entire surface.
06 -
In a small bowl, mix together your melted butter and grated parmesan cheese. Drizzle or brush this mixture over the crescent dough.
07 -
Bake in a preheated oven at 375°F for 20-25 minutes, until the crust turns a gorgeous golden brown and the filling is bubbling.
08 -
Once baked, let the casserole rest for a few minutes before slicing and serving.