Jimmy's Mexican Pizza

INGREDIENTS

• 1/2 pound ground beef
• 1 medium onion, diced
• 1 clove garlic, minced
• 1 tablespoon chili powder
• 1 teaspoon ground cumin
• 1/2 teaspoon paprika
• 1/2 teaspoon black pepper
• 1/2 teaspoon salt
• 1 (16 ounce) can refried beans
• 4 (10 inch) flour tortillas
• 1/2 cup salsa
• 1 cup shredded Cheddar cheese
• 1 cup shredded Monterey Jack cheese
• 2 green onions, chopped
• 2 roma (plum) tomatoes, diced
• 1/4 cup finely chopped jalapeno peppers
• 1/4 cup sour cream (optional)