Easy Beef and Potato Casserole

Ingredients

• 2 lb. lean ground beef
• 1 onion, chopped
• 1 pkg. (10 to 12 oz.) frozen corn
• 1 can (10-1/2 oz.) cream of mushroom soup
• ½ cup milk
• ½ cup sour cream
• ½ tsp. each black pepper and onion powder
• 1 cup shredded cheddar cheese, divided use
• 3 Tbsp. real bacon bits
• 6 cups (about ¾ of 32-oz. pkg.) frozen seasoned bite-size potato nuggets