Make just enough of this recipe. Use the portion planning tool to calculate exactly how much of each ingredient you'll need.1. Rub butter into a large non-stick muffin tray2. Beat egg with 5 ml of water and pour into the muffin tray3. Bake at 350°F until egg mixture is set (6-8 min)4. While egg is baking, toast biscuit or croissant and remove prosciutto from fridge.5. Butter the biscuit or croissant halves and layer, from the bottom half, lettuce, cheese slice, prosciutto, egg and tomato.6. Place top crust on sandwich.