Preheat the oven to 375°F. Lightly spray a standard size 12 cup cupcake pan with nonstick cooking spray.
Press one soft tortillas onto the the bottom and sides of the wells. Fold the sides to evenly fit. Spray the tortillas with nonstick cooking spray. Set aside.
In a large skillet over medium-high heat, cook the ground beef and onion in olive oil until no pink remains. Drain excess grease from the pan.
To the pan add the taco seasoning, chili powder, lemon pepper and seasoned salt. Stir to combine then add the taco sauce.
Simmer uncovered over medium heat for 5-10 minutes to reduce, then remove from the heat.
Use a spoon to evenly divide the taco beef mixture into each tortilla cup. (About 1/4-1/3 cup)
Sprinkle cheese on top. Place the pan into the oven and bake for 15-20 minutes.
Remove from the oven and let stand 3-5 minutes, then serve with sour cream, tomatoes, salsa, green onions, guacamole, black olives, jalapeños slices or any of your favorite taco toppings.