Melt butter in a large skillet over medium-high heat. Add mushrooms and onions and saute until onions have turned translucent, about 5 minutes. Add ground beef and cook and stir until browned and crumbly, 5 to 7 minutes. Sprinkle with flour, garlic powder, seasoning salt, paprika, and pepper; stir until mixed in.

Add condensed soup, sour cream, liquid smoke, and Worcestershire sauce. Reduce heat to medium, and cook and stir until sauce has thickened, 5 to 7 minutes.