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Caramelized Onion and Mushroom Quiche with Potato Chip Crust

Cook Time: 1 hour, 30 minutes

Serving Size: 6-8

Caramelized Onion and Mushroom Quiche with Potato Chip Crust

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.


  • Crust
  • 1 8-9oz 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


  1. Crust Instructions
  2. Preheat oven 350 degrees.
  3. 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.
  4. Pour in melted butter and stir.
  5. Pour mixture into a lightly oiled tart pan (my pan size was 9.75” in diameter)
  6. Prebake the crust in the oven for 10 minutes then remove from the oven to cool.
  7. Quiche Filling Instructions
  8. Preheat oven 350 degrees
  9. 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.
  10. 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.
  11. Add the onions back into the pan and add in salt, pepper, Italian seasoning and garlic powder. Remove from the heat and set aside.
  12. In a medium bowl whisk eggs, egg whites, milk and heavy cream.
  13. 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.
  14. 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.
  15. Let the quiche cool for 10 minutes before serving,
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