Ingredients

• 3/4 pound ground beef
• 1 tablespoon butter or margarine
• 2 medium zucchini, thinly sliced 1/4 pound fresh mushrooms, sliced
• 2 tablespoons sliced green onions 1 1/2 teaspoons chili powder
• 1 teaspoon salt
• 1/8 teaspoon garlic powder 1 1/2 cups cooked rice
• 1 (4 ounce) can chopped green chilies
• 1/2 cup sour cream
• 1 cup shredded monterey jack cheese, divided