Loaded Potato Meatloaf with Cheesy Mashed Potatoes and Bacon

Ingredients

• 1 pound ground beef
• 1/2 cup breadcrumbs
• 1 large egg
• 1/4 cup whole milk
• 1/2 teaspoon garlic powder
• 1/2 teaspoon onion powder
• Salt
• freshly ground black pepper
• 4 cups mashed potatoes (prepared from approximately 4 large Russet potatoes)
• 1/2 cup sour cream
• 1 cup shredded cheddar cheese, divided
• 4 slices turkey bacon, cooked until crisp and crumbled
• 2 green onions, thinly sliced (optional)