"Create a recipe using 2 lbs ground beef, 1 pureed onion, 1/3 cup plain yogurt, 2 tsp paprika, 2 tsp garlic powder, 2 tsp cumin, 2 tsp chili powder, 1 tsp salt, 1 tsp oregano, 1/2 tsp pepper, 2 tbsp olive oil, 4 tomatoes, 6 peppers, 1/2 cup sliced English cucumber, tzatziki or aioli sauce, and lettuce. The recipe should incorporate these ingredients into a flavorful dish."