Cauliflower and Caramelized Onion Tart

Ingredients

• *Available at some supermarkets, specialty foods stores, and Italian markets nationwide.
• ¾ cup grated Parmesan cheese
• 1 cup grated Gruyère cheese
• Pinch of ground nutmeg
• ¼ teaspoon ground white pepper
• ½ cup whipping cream
• 1 (7- to 8-ounce) container mascarpone cheese (Italian cream cheese)*
• + 7 more ingredients
• • 2 large eggs
  • 1 tablespoon Dijon mustard
  • 1 large onion, halved lengthwise, thinly sliced
  • 1 refrigerated pie crust
  • 1 tablespoon truffle oil*
  • 2 ½ tablespoons olive oil, divided
  • 1 small head of cauliflower (about 1 pound), cored, cut into 1-inch florets

1. Position rack in center of oven; preheat to 425°F. Toss cauliflower with 1 tablespoon olive oil in large bowl. Spread on large rimmed baking sheet, spacing apart. Sprinkle with salt and pepper. Roast 15 minutes; turn florets over. Continue roasting until tender, about 25 minutes longer. Cool c...

View full recipe at SpringPad