It will continue to set as it cools. Can I add other ingredients to my mushroom quiche? Definitely! Consider adding ingredients like cooked spinach, caramelized onions, bacon, or different cheeses ...

This Grilled Ham and Cheese Quiche is grilled using leftover smoked ham, gruyere cheese, and caramelized onions, for an ...

Preheat oven to 350. Slice onions ¼-inch wide. Add 1 tbs. of olive oil to a warm skillet, add onions, and cook over medium heat until golden and soft, approximately 15 minutes. In a separate ...

Coat a large sauce pan with a little bit of olive oil or cooking spray. Add onions over medium heat and cook until tender, about 5-7 minutes. Add the Guinness to the pan, stir and cover.