French Onion Tart

November 09, 2021 By: Comments
Tagged: Appetizers Appetizers. Cheese Cheese. Dinner Dinner. Recipes Easy Recipes Easy. Onions Onions. Thanksgiving Thanksgiving. Appetizers & Snacks Appetizers & Snacks. Christmas Appetizers Christmas Appetizers. Christmas Christmas. Baked Baked.
15 minutes
1 hour 30 minutes (plus cooling time)
Bake up more savings and keep the cravings at bay with this tasty tart! You probably have many of the ingredients on-hand from the holidays, so this starter is a great way to hold your friends and family over until the main meal is served without stretching your budget. Feel free to complete the first four steps the night before to keep your meal prep stress-free. Then, all you have to do is pop the tart in the oven and serve!


Select ingredients:


  1. Heat the butter in a large pot set over medium heat. Add the onions, salt, pepper and thyme and cook, stirring frequently, until the onions cook down by half and are golden brown and tender, 45-55 minutes. Add the balsamic vinegar and stir to combine. Remove from the heat and let cool.
  2. Preheat the oven to 400°F and line a baking sheet with the parchment paper.
  3. Lay the pie dough on top of the parchment and spread a thin layer of Dijon mustard on the pie dough, leaving a 1-inch border.
  4. Sprinkle 1 cup of cheese atop the mustard, then spoon on the cooked and cooled onions. Top with the remaining cheese and gently fold the outer edges of the dough over the filling to create a freeform crust.
  5. Brush the dough with the beaten egg and bake for 35 minutes or until the dough is golden brown and set on the bottom. Let cool for 5-10 minutes before serving.

Recipe Tip: Pair this tart with a simple green salad for lunch or a light dinner.