Crustless Caramelized Onion Tomato and Cheese Tart

Crustless Caramelized Onion, Tomato, and Cheese Tart

Crustless Caramelized Onion, Tomato, and Cheese Tart


30 minutes

Details
  • Servings:   8
  • Calories:   254
  • Protein:   16g
  •  
  • Fiber:   2g
  • Sugar:   4g
  • Carb Total:   6g
  •  
  • Trans Fat:   1g
  • Saturated:   10g
  • Fat Total:   19g
  •  
  • Diet:   Low-Carb
  • Meal:   lunch, dinner
  • Dish:   desserts
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Cuisine
  • american
Ingredients
  • 1 1/2 tablespoons olive oil
  • 1 tablespoon butter
  • 4 medium red onions, thinly sliced
  • teaspoon salt
  • 1 teaspoon balsamic vinegar
  • 1 cup reduced-fat jarlsberg or gruyere cheese, shredded
  • 1 cup part-skim mozzarella cheese, shredded
  • 3 eggs
  • 4 egg whites
  • 2 plum tomatoes or 1 beefsteak tomato, sliced
  • 1 tablespoon grated Parmesan cheese
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