Retro Ground Beef Casserole with Biscuits

1 . Stage

Preheat the oven to 350 degrees F (175 degrees C). Spray a glass baking dish (such as Pyrex®) with cooking spray.

2 . Stage

Heat oil in a pan over medium-high heat. Add carrots, onions, and celery and saute until onions are translucent, 5 to 7 minutes.

3 . Stage

At the same time, heat a large skillet over medium-high heat. Cook and stir ground beef in the hot skillet until browned and crumbly, 5 to 7 minutes. Drain and discard grease.

4 . Stage

Move beef to one side of the skillet and melt butter over medium heat. Whisk in flour a little at a time until combined; whisk in milk, whisking constantly to prevent lumps. Stir in beef broth. Add sauteed vegetables, garlic salt, onion powder, garlic powder, and black pepper. Bring to a boil; cover and remove from heat.

5 . Stage

Add buttermilk to baking mix. Stir until a soft dough forms. Place on waxed paper. Roll to 1/2-inch thickness. Cut with a 2 1/2-inch round biscuit cutter dipped in baking mix.

6 . Stage

Pour the beef mixture into the prepared baking dish and top with biscuits.

7 . Stage

Bake in the preheated oven until biscuits are browned, 24 to 25 minutes.