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Caramelized Onion Quiche

Caramelized Onion and Mushroom Quiche with Potato Chip Crust

I created this recipe from leftover caramelized onions, mushrooms and potato chips from a burger recipe I made the night before.
Cook Time: 1 hour 30 minutes


  • Crust
  • 1 8-9 oz bag of potato chips
  • 6 tablespoons butter melted
  • 15 crackers saltine or butter
  • ¼ cup mozzarella cheese shredded
  • Quiche Filling
  • 3 eggs
  • 3 egg whites
  • 1 large red onion sliced
  • 1 cup sliced button or crimini mushrooms
  • ? cup heavy cream
  • 1./2 cup milk
  • ½ cup feta
  • 2 tablespoons balsamic vinegar
  • 3 teaspoons of olive oil divided
  • ¼ teaspoon Italian seasoning
  • ¼ teaspoon pepper
  • ½ teaspoon salt
  • a pinch of garlic powder


  • Crust Instructions
  • Preheat oven 350 degrees.
  • In a food processor pulse potato chips until they turn into a fine crumble.. Pour chips into a large mixing bowl. Add crackers to the food processor and pulse into a fine crumble and pour into the bowl with the chips. Whisk to mix the dry ingredients together.
  • Pour in melted butter and stir.
  • Pour mixture into a lightly oiled tart pan (my pan size was 9.75” in diameter)
  • Prebake the crust in the oven for 10 minutes then remove from the oven to cool.
  • Quiche Filling Instructions
  • Preheat oven 350 degrees
  • In a large pan, heat 2 tablespoons of olive oil on medium high and add in sliced onions. Sauté the onions for 8 minutes then add in balsamic vinegar. Reduce heat to low and cover for 10 minutes. Remove from the heat and place onions in a bowl.
  • In the same pan on medium, heat the last teaspoon of olive and add in the mushrooms. Sauté mushrooms for 10 minutes or until all liquid as evaporated.
  • Add the onions back into the pan and add in salt, pepper, Italian seasoning and garlic powder. Remove from the heat and set aside.
  • In a medium bowl whisk eggs, egg whites, milk and heavy cream.
  • Take the tart pan with the potato chip crust and add in a layer of feta. Top this with the onion and mushroom mixture. Add on top the final layer of mozzarella cheese and then pour the egg mixture across the top.
  • Place tart pan on baking sheet and bake in the oven for 50 minutes or until a knife inserted in the middle comes out clean.
  • Let the quiche cool for 10 minutes before serving,
Tried this recipe?Mention @MeikoAndTheDish or tag #MeikoAndTheDish


Serving: 6g

*Nutrition information is a rough estimate.

**The equipment section above contains affiliate links to products I use and love. As an Amazon Associate I earn from qualifying purchases.