For oopsie bread (for 10 pieces)

• 3 egg whites
• 3 egg yolk
• 1 dessert spoon baking powder
• 100 g mild cream cheese
• Salt

For hamburgers (for 5 servings)

• 500 g low fat minced beef
• 1 egg
• 2 tablespoons bread crumbs (30 g)
• 1 teaspoon vinegar (apple or rice)
• 2 teaspoons cumin
• 1 teaspoon black pepper
• 1 teaspoon salt

To decorate hamburgers (for 5 servings)

• 5 leaves of curly lettuce
• 5 slices of tomato
• 5 slices of American cheese

For caramelized onions (5 servings)

• 2 tablespoons of olive oil (20 g)
• 3 red onions
• 2 tablespoons soy sauce
• 2 tablespoons honey (25 g)