First, cook the onion in the olive oil over medium heat until caramelized. Add a little water to avoid its burning.
Add garlic, beef, ginger powder, turmeric and taco seasoning, then cook until the beef is fully cooked ( you may need to add a little water). Set aside.
Cut each tortilla into a square shape. You can cut the four angles of the tortilla as shown in the picture above (optional).
Coat the muffin pan cups with a cooking spray, then line the cups with the square shaped tortillas (or the small tortillas).
Slightly press in the center of each tortilla to form a tortilla cup.
Put a spoonful (or more);of beef mixture into each tortilla cup.
Top the beef in the tortilla cups with shredded cheddar cheese.
Brush the tortilla cups edges with melted butter.
Bake in 375℉, preheated oven for about 20 minutes or until the cups edges are slightly brown.
Serve the tortilla cups as is or with shredded lettuce, tomatoes and sour cream on top(I have used ranch dressing).