Caramelized Onion and Gruyère Tart

Ingredients

• 2 large onions
• 1 tablespoon(s) vegetable oil
• Buttery Cornmeal Pastry
• Salt and freshly groundwhite pepper
• 0.25 cup(s) dry Marsala
• 1 tablespoon(s) unsalted butter
• 6 ounce(s) Gruyère cheese

1. In a large skillet, melt the butter in the vegetable oil. Add the sliced onions, cover and cook over moderate heat, stirring, until softened, about 12 minutes. Uncover the skillet and cook, stirring occasionally, until the onions are very soft and well browned, about 45 minutes longer; add a l...

View full recipe at Food & Wine