One Pot Mexican Rice Casserole

Ingredients

1 Pound Ground Beef
1 Small Onion, Diced
Salt & Pepper, To Taste
2 Tablespoons Taco Seasoning
1 Teaspoon Garlic Powder
1 Cup Long Grain White Rice
1 1/2 Cups Beef Broth
1 15 Ounce Can Corn, Drained
8 Ounces Tomato Sauce
1/2 Cup Salsa
1 Cup Shredded Cheese