Preheat the oven to 425F.
Brown ground beef in a skillet.
Follow taco seasoning instructions and add the seasoning to the cooked ground beef.
Once the beef is cooked, place it in a bowl and set aside.
Spray a muffin tin with non-stick cooking spray.
Place one tortilla round in each muffin tin, then press the tortilla firmly down in each cup.
Spoon 2 T of ground beef into each tortilla cup, then press the beef down with the back of a spoon.
If using, spoon in a teaspoon of beans to each cup.
Sprinkle each cup with a topping of cheese.
Bake in the oven for 10 minutes or until the tops of the tortillas are golden.
While your Taco Cups are baking, dice the avocado into ½-inch pieces. Add to a bowl and set aside.
Thinly slice the green tops of the green onions. Set aside.
Once your timer is done, take them out of the oven to cool for 2 minutes.
Top each cup with salsa, avocado, sour cream, and green onions. We added topping sparsely at first then increased the amounts and added more toppings as necessary.
Plate with a lime wedge if you want and enjoy.