Best Cauliflower Caramelized Onion Tart Recipes

CAULIFLOWER AND CARAMELIZED ONION TART

Steps:

• 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 cauliflower, then thinly slice. Drizzle with truffle oil; toss. Reduce oven temperature to 350°F.
• Press pie crust onto bottom and up sides of 9-inch-diameter tart pan with removable bottom. Line pie crust with foil; fill with pie weights. Bake crust 20 minutes. Remove foil and pie weights; bake until crust is golden, about 5 minutes, pressing crust with back of fork if bubbles form. Cool crust. Maintain oven temperature.
• Heat remaining 1 1/2 tablespoons olive oil in heavy large skillet over medium heat. Add onion; sprinkle with salt and pepper. Cook until onion is deep golden brown, stirring occasionally, about 40 minutes. Cool slightly. DO AHEAD Can be made 1 day ahead. Store crust at room temperature. Cover and chill cauliflower and onion separately.
• Brush bottom and sides of crust with mustard. Spread onion in crust. Arrange cauliflower evenly over. Set tart on rimmed baking sheet. Whisk eggs and next 4 ingredients in medium bowl. Stir in Gruyère. Pour mixture over filling in tart pan; sprinkle with Parmesan. Bake until tart is golden and center is set, about 40 minutes. Transfer to rack; cool 15 minutes before serving.

CARAMELIZED ONION AND ROASTED CAULIFLOWER TART

Steps:

• 1. Preheat oven to 450F. Toss the cauliflower in the oil. Spread out onto a non stick baking sheet. Season with salt and pepper. Cook for 15, then flip. Cook 15 minutes more and remove from oven.
• 2. In a good skillet, bring 1 1/2 tbps of good olive oil to a shimmer. Add thin sliced Vidalia onions, add in a pinch or two of salt and pepper and stir, stir, stir...for about 30 minutes until they turn a beautiful golden brown. Don't ignore those fronds.
• 3. MAKE UP THAT DOUGH: I really hate working with pastry, but this was pretty harmless.
• 4. I used a whisk: Flour, cornstarch, salt and butter. Then add in the egg. I lost my pastry blender in the move to the lower 48 and had to use a fork....gave that up quick and used my grandma's fingers to get the pea sized effect I needed.
• 5. Smash that dough all together and roll it thin. Yes, I cheated and used plastic wrap as a medium. Transfer the dough to the tart pan and press in. Now lightly coat the dough with 1 TBSP Dijon mustard, bottom and sides.
• 6. Layering the Stuff: After pressing in the tart dough and brushing the bottom and sides with dijon, add in the onions. Top with cauliflower.
• 7. In a bowl, mix the eggs, marscapone, cream, white pepper, nutmeg and Guyere. Pour over the top of the tart. I had to use my hands to redistribute the cheesiness.
• 8. Top with 1/3 cup Parmesan cheese. Bake 350F for 40 minutes.

CAULIFLOWER & CARAMELIZED ONION TART

Steps:

• 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 cauliflower, then thinly slice.
• Drizzle with truffle oil; toss.
• Reduce oven temperature to 350°F.
• Press pie crust onto bottom and up sides of 9-inch-diameter tart pan with removable bottom.
• Line pie crust with foil; fill with pie weights.
• Bake crust 20 minutes.
• Remove foil and pie weights; bake until crust is golden, about 5 minutes, pressing crust with back of fork if bubbles form.
• Cool crust.
• Maintain oven temperature.
• Heat remaining 1 1/2 tablespoons olive oil in heavy large skillet over medium heat.
• Add onion; sprinkle with salt and pepper.
• Cook until onion is deep golden brown, stirring occasionally, about 40 minutes.
• Cool slightly.
• DO AHEAD Can be made 1 day ahead.
• Store crust at room temperature.
• Cover and chill cauliflower and onion separately.
• Brush bottom and sides of crust with mustard.
• Spread onion in crust.
• Arrange cauliflower evenly over.
• Set tart on rimmed baking sheet.
• Whisk eggs and next 4 ingredients in medium bowl.
• Stir in Gruyere.
• Pour mixture over filling in tart pan; sprinkle with Parmesan.
• Bake until tart is golden and center is set, about 40 minutes.
• Transfer to rack; cool 15 minutes before serving.

CAULIFLOWER AND CARAMELIZED ONION TART (LIGHTER VERSION)

Steps:

• Prepare a 9-inch-diameter tart pan with cooking spray.
• Heat olive oil in heavy large skillet over medium heat. Add onion; sprinkle with salt and pepper. Cook until onion is deep golden brown, stirring occasionally, about 40 minutes. Cool slightly.
• Preheat oven to 350°F.
• Spread onion in pan. Arrange cauliflower over evenly. Set tart on rimmed baking sheet.
• Whisk eggs and next 5 ingredients in medium bowl. Stir in Gruyère. Pour mixture over filling in tart pan; sprinkle with Parmesan. Bake until tart is golden and center is set, about 40 minutes.
• Transfer to rack; cool 15 minutes before serving.

CAULIFLOWER AND CARAMELIZED ONION TART

Steps:

• Preheat the oven to 425 degrees F. Toss the cauliflower with a generous amount of olive oil to coat, as well as salt and pepper to taste. Place the cauliflower on a baking sheet and roast for about 20 minutes, making sure to flip once or twice along the way. The florets should just be getting golden. Remove the florets from the oven and set aside. Lower the temperature to 350 degrees F.
• While the florets are roasting, you'll caramelize the onion. Cut the onion in half and thinly slice it, then add about a tablespoon of olive oil to a large pan over medium-high heat. Add the sliced onion as well as a dash of salt and pepper to the pan.
• Cook the onion for about seven minutes, stirring occasionally, until it gets tender and translucent -- then reduce the heat to low. (Add a pinch of sugar once you reduce the heat for a little sweetness.) Then, let the onion slices cook on low until they become a deep golden or brown color - it takes about 20 minutes for them to caramelize. Stir them often enough so they don't burn the bottom of the pan, but make sure they have enough time to sit in the oil and caramelize. Add a little water to the pan if they start to stick too much to the bottom.
• Once the cauliflower is cool, thinly slice the florets so they are about 1/4-inch thick. Toss with a drizzle of truffle oil (if desired) and set aside.
• Mix together the eggs, mascarpone, cream, nutmeg, and salt and pepper to taste. Then, add the Gruyere (or substitute) to the mixture.
• Press your crust into a 9-inch tart pan, trimming any excess from the edges with a knife. If the crust didn't come refrigerated, you'll want to refrigerate it for 30 minutes after pressing into the pan and before assembling the tart.
• Place the pastry shell on a rimmed baking sheet (to catch any drips) and coat the bottom of the pastry shell with Dijon mustard (the mustard layer should only be 1/8-inch thick). Then, spread the onions evenly over the bottom of the pastry shell, followed by the roasted cauliflower.
• Pour the cheese and cream mixture over the onions and cauliflower, and then top the tart with the grated Parmesan cheese. Place the baking sheet into the oven and bake for about 40 minutes - you'll want the top to be golden brown and the center to be set.
• Let the tart cool for about 15 minutes before serving.