Hearty Cowboy Casserole Easy Ground Beef Dinner

Ingredients

• 1 tablespoon olive oil (15 ml)
• 1 pound ground beef (450g)
• 1 medium yellow onion, chopped (about 1 cup/150g)
• 1 green bell pepper, chopped (about 1 cup/150g)
• 1 teaspoon chili powder (5 ml)
• 1/2 teaspoon garlic powder (2.5 ml)
• 1/4 teaspoon cumin (1.25 ml)
• 1 (15 ounce/425g) can of diced tomatoes, undrained
• 1 (15 ounce/425g) can of corn, drained
• Salt and black pepper to taste
• 4 large russet potatoes, peeled and quartered (about 2 pounds/900g)
• 1/2 cup milk (120 ml)
• 1/4 cup butter, unsalted (57g)
• 1/2 teaspoon salt (2.5 ml)
• 1/4 teaspoon black pepper (1.25 ml)
• 1 cup shredded cheddar cheese (115g), divided (reserve 1/2 cup for topping)