Hamburger Cupcakes with Twice Baked Potato Frosting (gluten-free) - Kosher Everyday

Ingredients

• 2 pounds lean ground beef, room temperature
• 3 large eggs, room temperature, separated
• 1 medium onion, finely diced
• 1 clove garlic crushed, or one frozen garlic cube defrosted
• 1/4 cup carrots, finely shredded
• 1/4 teaspoon black pepper
• pinch of salt
• foil lined cupcake cups
• mashed potatoes