Cauliflower and Caramelized Onion Tart recipes

Cauliflower and Caramelized Onion Tart recipes

Cauliflower and Caramelized Onion Tart recipes


1 hour 45 minutes

Details
  • Servings:   8
  • Calories:   484
  • Diet:   Low-Carb
  • Meal:   lunch, dinner
  • Dish:   main course
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Cuisine
  • mediterranean
Ingredients
  • 1 small head of cauliflower (about 1 pound) or 1 pound of a larger head of cauliflower, cut into 1-inch flowerets (Romanesco cauliflower, especially orange or green, would be a pretty substitute)
  • 3 1/2 tablespoons olive oil
  • 1 tablespoon truffle oil or a few pinches of truffle salt (optional) (see Notes below)
  • 1 tablespoon truffle oil or a few pinches of truffle salt (optional) (see Notes below)
  • 1 refrigerated pie crust or a homemade tart shell (recipe below)
  • 1 large onion, halved lenghtwise and thinly sliced
  • 1 tablespoon Dijon mustard
  • 2 large eggs
  • 1 (7- to 8- ounce) container mascarpone cheese (see Note below for suggested substitutions)
  • 1/2 cup whipping cream (although any low- or full-fat milk or light cream will work as well)
  • 1/4 teaspoon ground white or black pepper
  • Pinch of ground nutmeg
  • 1 cup grated Gruyère cheese (Swiss or Comté are great swaps)
  • 1/3 cup Parmesan cheese
  • 1 1/4 cups flour
  • 1 tablespoon plus 2 teaspoons cornstarch
  • 1/4 teaspoon salt
  • 6 tablespoons butter, diced
  • 1 egg
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