Other desired toppingssuch as salsa, guacamole, etc.
Instructions
In a large skillet, melt butter over medium heat. Add onions and peppers. Sauté over medium heat until soft.
While onion and pepper mixture cook, season top round steak with salt, pepper and garlic powder and grill until medium rare to medium. Do not overcook because it will cook a bit more when you slice it and combine with the onions and peppers.
Once steak is done, cover with foil and let rest at least 10 minutes. Slice steak into 1/4 inch strips and add to pan with the onions and peppers. Stir to combine and heat through.
When ready to serve, warm flour tortillas in microwave. Wrap 2 tortillas in in a paper towel and heat in microwave about 10 seconds, until warm. Build your fajita by adding a sour cream smear to the tortilla, add steak mixture and cheese.