French Caramelized Onion Tart (Print Version)
# Ingredients:
→ Main Ingredients
01 -
2 sheets puff pastry, thawed overnight in refrigerator
02 -
4 cups sweet yellow onions, sliced
03 -
1 tablespoon olive oil
04 -
2 teaspoons brown sugar
05 -
1/2 teaspoon kosher salt
06 -
1 cup Gruyere cheese, shredded
07 -
2 teaspoons fresh thyme, destemmed and minced
08 -
2 tablespoons heavy cream
# Instructions:
01 -
Heat oil in large deep pan over medium-high heat. Cook onions for 10 minutes until softened. Add salt and brown sugar, cook uncovered 20 minutes more until caramelized. Let cool.
02 -
Preheat oven to 400°F. On parchment-lined baking sheet, overlap pastry sheets and press together to form large rectangle. Fold up edges and prick base with fork.
03 -
Sprinkle cheese evenly over pastry base. Top with cooled caramelized onions. Brush edges with heavy cream and sprinkle with thyme.
04 -
Bake 18-20 minutes until cheese melts and pastry is crisp. Cool 5 minutes before cutting. Garnish with extra thyme if desired.
# Notes:
01 -
Can be served hot or at room temperature.
02 -
Ensure onions are cooled before placing on cold pastry.