Karbonader (Lean Beef Patties) with Caramelized Onions

Ingredients

• 2 Onion
• 1 tablespoon Butter
• 1 lb Ground Beef
• 1/2 teaspoon Salt
• 1/2 teaspoon Pepper
• 1/2 teaspoon Nutmeg
• 1/2 tbs Cornstarch
• 50 ml Water
• 2 tblsp Butter