In a large skillet over medium heat, brown the ground turkey or beef until fully cooked, about 7-10 minutes. Drain any excess fat.
Add the taco seasoning and a splash of water (about 2-3 tablespoons) to the meat, stirring well. Let it simmer for about 5 minutes until thickened. Season with salt and pepper to taste. Set aside.
While the meat simmers, prepare the toppings. In a bowl, combine the diced avocado, halved cherry tomatoes, corn kernels, and black beans. Drizzle with lime juice and a pinch of salt, then gently toss.
To assemble the taco salad cups, take the taco shells or tortilla cups and fill each with a generous spoonful of the seasoned meat mixture.
On top of the meat, layer a spoonful of the avocado-corn-tomato mixture, followed by shredded lettuce and a sprinkle of shredded cheese.
Finish with a dollop of sour cream or Greek yogurt, and garnish with fresh chopped cilantro.
Notes
Arrange the taco cups on a large platter for serving. You can also add lime wedges on the side for extra zest.