Heat about 2 T. olive oil or butter in large skillet and brown ground beef and onion over medium-high heat, about 6 – 8 minutes, stirring to break up meat. Drain fat if any.
Reduce heat to low and ADD salsa, WannaRub, and beer. Stir until well combined and cook for about 3 minutes to reduce liquid. ADD half of the cheese and stir until melted. Add remaining cheese. Cook and stir for 3 minutes or less until cheese is melted. SERVE hot in a heatproof bowl or mini bowls with Tortilla scoops.