Rustic Onion Tart

Name: Rustic Onion Tart
Prep time: 2 h
Cook time: 2 h
Total time: 2 h
Yield: 4
Cuisine: Global
Ingredients: 1 recipe for butter sour cream pastry dough* or 1 packaged, flat pie crust (Trader Joes has one in their frozen section); 3 mediums red and/or yellow onions (enough for 5 to 8 cups, sliced); 2 Tbsps extra virgin olive oil; 1 Tbsp butter; 1 serving Salt; 1 teaspoon balsamic vinegar; 1 teaspoons fresh thyme, chopped, or 1/4 teaspoon dried thyme; 177 milliliters (not packed) roughly grated Gruyère Swiss cheese; 160 grams 1/4 cup all purpose flour; 1 teaspoon salt; 142 grams butter (1 1/4 sticks, 10 Tbsp, 137g), cubed; 59 milliliters sour cream

Rustic Onion Tart requires around 2 hours from start to finish. For $1.07 per serving, you get a hor d'oeuvre that serves 4. One portion of this dish contains roughly 11g of protein, 48g of fat, and a total of 627 calories. This recipe from Simply Recipes requires butter, roughly gruyère swiss cheese, extra virgin olive oil, and thyme.

Instructions

Prepare the dough: If you are making a crust from scratch, prepare the dough and let it chill in the refrigerator while you are cooking the onions.

Ingredients you will need

Onion

Crust

Dough

To prepare the dough, whisk the flour and salt together in a large bowl.

Ingredients you will need

Dough

All Purpose Flour

Salt

Equipment you will use

Whisk

Bowl

Cut the butter into the flour with your hands or with a pastry cutter, until the mixture resembles a coarse meal.

Ingredients you will need

Butter

All Purpose Flour

Equipment you will use

Pastry Cutter

Add the sour cream and use a fork to incorporate it into the dough. Gather the dough into a ball and shape it into a disk. Wrap it with plastic wrap and chill for at least an hour.

Ingredients you will need

Sour Cream

Dough

Wrap

Equipment you will use

Plastic Wrap

Peel and slice the onions, lengthwise from stem to root. (See How to Slice an Onion)

Ingredients you will need

Onion

Heat olive oil and butter in a large, heavy-bottomed sauté pan on medium heat. Once the butter has melted, add the onions and sprinkle a little salt over them.

Ingredients you will need

Olive Oil

Butter

Onion

Salt

Equipment you will use

Frying Pan

Cook, stirring occasionally for 10 minutes, until the onions have softened and are translucent.

Ingredients you will need

Onion

Reduce the heat to medium low and cook for an additional 40 minutes, stirring occasionally, until the onions are well browned.

Ingredients you will need

Onion

Add balsamic vinegar and cook for 10 minutes more, until onions are completely caramelized.

Ingredients you will need

Balsamic Vinegar

Onion

Remove from heat.

Roll out the dough: Preheat the oven to 450°F.

Ingredients you will need

Dough

Roll

Equipment you will use

Oven

Remove the dough from the refrigerator and let stand for 5 minutes before rolling it out.

Ingredients you will need

Dough

Roll out the dough on a lightly floured surface to a 13-inch diameter.

Ingredients you will need

Dough

Roll

Transfer the crust dough to a cookie sheet lined with parchment paper.

Ingredients you will need

Crust

Dough

Equipment you will use

Baking Paper

Baking Sheet

Layer the cheese and onions onto the dough:

Ingredients you will need

Cheese

Onion

Dough

Place all but a couple tablespoons of the cheese in the center of the dough.

Ingredients you will need

Cheese

Dough

Spread to within 1 1/2 inches from the edges.

Ingredients you will need

Spread

Add the caramelized onions, layering them on top of the cheese.

Ingredients you will need

Caramelized Onions

Cheese

Sprinkle with thyme.

Ingredients you will need

Thyme

Pleat the edges: Fold the edges of the crust dough over so that a small circle of onion is still showing in the centre of the tart.

Ingredients you will need

Crust

Dough

Onion

Sprinkle the remaining cheese over the top of the tart.

Ingredients you will need

Cheese

Place in the oven on the middle rack.

Equipment you will use

Oven

Bake for 10 minutes at 450°F. Reduce the heat to 350°F and bake for an additional 20-25 minutes, until the crust is golden brown.

Ingredients you will need

Crust

Equipment you will use

Oven

Remove from oven and let sit for 10 minutes before serving.

Equipment you will use

Oven

Equipment

Ingredients

Servings:

recipe for butter sour cream pastry dough* or 1 packaged, flat pie crust (Trader Joe's has one in their frozen section)3mediums

red and/or yellow onions (enough for 5 to 8 cups, sliced)2Tbsps

extra virgin olive oil 1Tbsp

butter 1serving

Salt 1teaspoon

balsamic vinegar 1teaspoons

fresh thyme, chopped, or 1/4 teaspoon dried thyme 177milliliters

(not packed) roughly grated Gruyère Swiss cheese 160grams

1/4 cup all purpose flour 1teaspoon

salt 142grams

butter (1 1/4 sticks, 10 Tbsp, 137g), cubed 59milliliters

sour cream

Recommended wine: Sparkling Rose, Sparkling Wine

Sparkling rosé and Sparkling Wine are my top picks for Onion Tart. If you're serving a selection of appetizers, you can't go wrong with these. Both are very food friendly and complement a variety of flavors. One wine you could try is Ruffino Sparkling rosé. It has 4.4 out of 5 stars and a bottle costs about 13 dollars.