Onion and gruyere tart

Unbalanced

% Daily Values based on a 2,000 calorie diet

Step 1

Preheat oven to 425. Melt butter in a large nonstick skillet over medium-high heat. Add onion, salt, and pepper (and sugar if necessary). Stirring occasionally, cook 8-12 minutes, or until tender. Reduce heat to low and cover; cook an additional 5-10 minutes, or until onions are browned and caramelized. Stir occasionally while cooking.

Step 2

Shape pie crust on a lightly floured surface by rolling out into a 12-inch circle. Do this on parchment paper to make the transfer to a baking sheet easier.

Step 3

Brush with egg white, and sprinkle 1/2 cup cheese over dough. Top with onions, leaving a 2 1/2 inch border. Sprinkle remaining cheese, and fold the pie crust over the edge of the onions, pleating as you go. Leave a 4-inch wide opening in the center. Brush crust with egg white.

Step 4

Bake at 425 on the bottom rack 17-19 minutes, or until crust is golden-brown and cheese has melted. Let stand 5 minutes before serving.