Easter Hash Brown Casserole

Name: Easter Hash Brown Casserole
Ingredients: 3 tablespoons shallots, minced; 1 garlic clove, minced; 2 tablespoons butter; 1 tablespoons canola oil; 3 tablespoons flour; 1 1/2 cups milk; 1 tablespoons onion powder; 1 tablespoon garlic powder; 2 teaspoon kosher salt; 6 oz. diced ham; 1 red bell pepper, roasted and diced; 1 green bell pepper, roasted and diced; 2 oz. green chiles; 8 oz. extra sharp white cheddar cheese; 4 oz. mozzarella cheese; 4 oz. parmesan cheese; 1 lb. hash browns (not frozen)