Made with flavorful Gruyere cheese, its sure to be a new favorite.

Ever wake up in the morning with a craving for a specific food?

This morning it was quiche, specifically an onion quiche.

Caramelized Onion Quiche recipe

Elise Bauer

Simply Recipes / Elise Bauer

What Is Quiche?

Here are some of their tips for making quiche a little simpler.

Reheat slices in the microwave or in the oven covered in foil at 350F until heated through.

Sliced red onions on a cutting board, ready to caramelize

Simply Recipes / Elise Bauer

Freezea whole, cooled, fully cooked quiche by placing it in its pan in the freezer.

Freeze slices of cooked quiche on a baking sheet.

Just prebake it using the directions that follow.

Beans in a pie crust weighing it down for prebaking

Simply Recipes / Elise Bauer

That way the onions will hold their shape better during the long cooking involved in caramelizing.

Transfer to freezer to chill for 30 minutes.

Bake first for 15 minutes, remove from the oven and let cool a few minutes.

Pricking the crust with a fork

Simply Recipes / Elise Bauer

Carefully remove aluminum foil and weights.

(Fork holes allow any air to escape.)

Transfer to a wire rack to cool while making the filling.

Prebaked crust in a pie pan

Simply Recipes / Elise Bauer

Heat 2 tablespoons of extra virgin olive oil in a large, heavy-bottomed saute pan on medium heat.

Add the onions and sprinkle a little salt over them.

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

Cheese added to the prebaked crust

Simply Recipes / Elise Bauer

Add 2 teaspoons balsamic vinegar and cook for 10 minutes more, until onions are completely caramelized.

Place tart pan on a baking sheet to catch any runoff.

Sprinkle half the cheese evenly over the bottom of the crust.

Caramelized onions and cheese added to the crust

Simply Recipes / Elise Bauer

Spread onions over the cheese and then top with remaining cheese.

In a medium bowl, whisk together milk, cream, and eggs.

Season with nutmeg, salt, and pepper.

Unbaked caramelized onion and Gruyère cheese quiche

Simply Recipes / Elise Bauer

Pour over the tart.

Transfer to the 350F oven and bake until just set in the center, 30 to 35 minutes.

Cool on a wire rack for about 10 to 15 minutes before slicing.

Baked caramelized onion quiche

Simply Recipes / Elise Bauer