The options for quiche fillings are almost endless. A basic guideline is that for a 9-inch quiche you’ll need about 1 1/2 to 2 cups of cooked vegetables. If you’re adding meat or cheese, use about 1/2 to 1 cup meat, such as cooked bacon or sausage, and 1/2 to 1 cup cheese.
Use 1 cup cooked chorizo sausage, 1 cup roasted red bell peppers and tomatoes, 1/2 cup chopped fresh cilantro, 1/2 cup chopped green onions and 1 cup shredded pepper-Jack cheese.
Use 1 cup cut-up smoked salmon, 1 1/2 cups cooked asparagus spears, 1/4 cup chopped fresh dill or chives and 1 cup cubed cream cheese.
Use 1 1/2 cups cooked sliced mushrooms and 2 cups chopped fresh kale (roasted or steamed and excess moisture pressed out). Add 1 cup shredded Swiss cheese.