Clean Eating Mexican Shepherds Pie

Name: Clean Eating Mexican Shepherds Pie
Ingredients: * 1 1/2 pound lean, ground turkey; * 1 tablespoon garlic powder; * 1 tablespoon onion powder; * 1 tablespoon cumin; * 1 tablespoon chili powder; * 1 tablespoon olive oil; * 1 (15 ounce) can diced tomato, no sugar added; * 1 pound frozen, corn; * 1 (15 ounce) can black bean, no sugar added - drained and rinsed; top layer ingredient:; * 3 large russet potato; * 2 teaspoon garlic powder; * 1 teaspoon salt; * 1 cup milk (any kind); * 1 cup chicken broth; * 1 teaspoon cumin; * 1/2 teaspoon black pepper