Preheat oven 350°F
Brown ground beef in skillet over medium-high heat.
Drain excess fat.
Add onion, bell pepper and corn to skillet.
Cook for 6 minutes or until veggies are tender.
Stir in taco sauce, chili powder, garlic salt, cumin and stir until well blended.
Cook until all ingredients are heated though and then remove from heat.
Take tortillas and spread a thin layer over each shell. Spoon beef mixture in the center and top with cheese.
Roll up each tortilla separately and place them seam side down on a baking sheet.
Brush with melted butter.
Bake for 30 to 35 minutes, or until golden brown.
Garnish with lettuce, tomato, salsa and sour cream.