Ultimate Tex-Mex Crunchwrap

Ingredients

• 3/4 teaspoon ground cumin
• 1/4 cup water
• Cooking spray
• 3/4 cup sour cream
• 1/4 teaspoon onion powder
• 1 cup shredded mild cheddar cheese
• 1/2 teaspoon salt
• 1 lb ground beef
• 5 tostada shells
• 1/2 cup diced tomatoes
• 1 cup shredded lettuce
• 1 1/2 cup nacho cheese
• 1/4 teaspoon garlic powder
• 5 large flour tortillas
• 1 1/2 teaspoon chili powder