• 1 tablespoon butter
• 1/2 cup chopped green onions
• 1/2 teaspoon garlic powder
• 1 (4 ounce) can diced green chiles
• 1 (10.75 ounce) can condensed cream of mushroom soup
• 1/2 cup sour cream
• 1 1/2 cups cubed cooked chicken breast meat
• 1 cup shredded Cheddar cheese, divided
• 6 (12 inch) flour tortillas
• 1/4 cup milk
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