Preheat your oven to 375°F (190°C) to ensure it reaches the right temperature for baking.
In a large skillet, heat the olive oil over medium heat until shimmering. Add the finely chopped onion and minced garlic, sautéing for 3-4 minutes until the onion turns translucent and fragrant.
Incorporate the ground chicken into the skillet, using a spatula to break it apart. Cook, stirring occasionally, for about 5-7 minutes until the chicken is browned and fully cooked through.
Once the chicken is cooked, stir in the ground cumin, chili powder, salt, and pepper. Mix thoroughly to ensure the spices coat the chicken evenly. Remove the skillet from heat and let it cool slightly.
To soften the corn tortillas for easier handling, wrap them in a damp paper towel and microwave for about 30 seconds. This will make them pliable and easier to work with.
Lightly grease a muffin tin with cooking spray or oil. Take one tortilla, place it in a muffin cup, and gently press it down to form a taco shell shape. Repeat this process with the remaining tortillas until all are shaped into shells.
Generously spoon the chicken mixture into each tortilla cup, filling them to the brim. Top each one with a sprinkle of shredded cheddar cheese to add a melty layer.
Place the muffin tin in the preheated oven and bake for 15-20 minutes, or until the tortillas are crispy and the cheese has melted and is bubbly and golden.
Once baked, remove the taco cups from the oven and allow them to cool for a few minutes. Carefully lift each taco cup out of the muffin tin using a fork or your fingers to avoid breakage.
Serve the warm taco cups garnished with a generous amount of freshly shredded lettuce, diced tomatoes, a dollop of sour cream, and a sprinkle of chopped cilantro for a pop of color and flavor.
Notes
For extra flavor, consider adding your favorite taco toppings.