Spinach Mushroom Quiche
Spinach Mushroom Quiche is a creamy and savory tart with earthy mushrooms, bright spinach, and melty cheese, perfect for an easy weeknight dinner or leisurely brunch. The flaky pastry and custardy interior deliver satisfying texture in every slice, making it a reliable crowd pleaser and a great make ahead option.
Equipment
- Skillet
- Whisk
- Oven
- Prepared pastry shell
Ingredients
- 1 tablespoon butter Melted in a skillet to provide a rich, silky base for sautéing aromatics and vegetables; contributes buttery flavor and helps prevent sticking while building the quiche’s foundational taste.
- 4 ounces sliced mushrooms Sautéed until golden to add savory, umami depth and pleasant texture; releases moisture and concentrates mushroom flavor to complement the custard filling.
- 4 -5 ounces baby spinach, roughly chopped Wilted briefly to supply vibrant color, mild earthiness, and nutrients; chopped size ensures even distribution so each slice has balanced spinach presence.
- 1/4 of a red bell pepper, diced Diced and gently softened for bright, sweet crunch and color contrast; small pieces disperse through the quiche, adding subtle peppery sweetness without overpowering other flavors.
- 4 eggs Beaten thoroughly to form the structure of the custard; provides protein and coagulation that set the filling when baked.
- 1 cup half and half Whisked with eggs to create a creamy, smooth custard base; contributes lightness and dairy richness while thinning the mixture to the right consistency.
- 1/2 cup heavy cream Poured into the egg mixture to increase richness and create an indulgent, velvety texture in the quiche custard.
- 3/4 teaspoon salt Sprinkled into the custard to season evenly and enhance overall flavor; helps balance the dairy and vegetables while amplifying savory notes.
- 1/4 teaspoon freshly ground black pepper Ground over the filling to add mild heat and aroma; provides a subtle peppery lift that brightens the other flavors without dominating them.
- 1 1/2 cups cheese, shredded (I used a mixture of Monterey Jack and sharp cheddar) Shredded and folded into the filling to add gooey, melty richness and savory depth; chosen blend provides a balance of creaminess and sharpness for flavor complexity.
- 1 green onion, sliced Sliced and scattered on top for a mild oniony freshness and light crunch; contributes a delicate allium note and visual appeal when baked.
- 1 prepared pastry shell (homemade or store-bought) Fitted as the vessel to contain the filling and create a flaky, buttery crust; supports the custard and vegetables while adding textural contrast to the quiche.
Instructions
- Preheat oven to 400º.: The moment the oven warms you will notice a dry, warming scent in the kitchen that signals the pastry will crisp properly during the first high temperature stage, which helps set the edges before the gentler bake. A common mistake is skipping preheat, which can make the crust soggy, so wait until the oven reaches temperature. Use an oven thermometer to confirm accuracy if your oven runs cool or hot.
- Heat the butter in a skillet. Add mushrooms, sprinkle with a pinch of salt, and saute till tender. Add spinach and red bell pepper; cook and toss until the spinach is wilted. Remove from heat.: As the butter melts and foams, you will hear a soft sizzle as the mushrooms hit the hot pan, and their aroma intensifies into a toasted, earthy perfume. The vegetables release moisture that then concentrates into richer flavors as they brown slightly. I like to keep the heat medium so the mushrooms develop color without burning, and I add the spinach last so it wilts quickly. A typical error is crowding the pan, which causes steaming rather than browning, so cook in batches if needed.
- Whisk together eggs, half and half, cream, salt, and pepper. Stir in the 1 1/2 cups of cheese of your choice. Set aside.: When you whisk the eggs and dairy, the mixture becomes glossy and slightly viscous, which will translate to a silky custard after baking. The grated cheese should be folded in so its strands are evenly distributed, which ensures each slice has pockets of melty cheese. Avoid over-whisking, which can incorporate excess air and lead to an uneven, spongy texture. Taste a tiny amount of the custard to check seasoning before pouring.
- Sprinkle crust with green onion and vegetables. Pour the egg mixture into the pastry shell.: As you layer the sautéed vegetables and sliced green onion into the chilled shell, you will see the colors contrast against the pale dough, and the aroma of warm vegetables will mingle with the buttery pastry. Pouring the custard should be slow and steady so the filling settles evenly. If your vegetables are still steaming, blot them briefly to prevent excess moisture from pooling, which can interfere with a clean set.
- Bake for 15 minutes at 400º. Decrease temperature to 325º and continue baking for about 40 minutes or till a knife inserted near the center comes out clean.: Initially the higher temperature will prompt the crust to puff and the outer custard to set, creating a protective edge; you'll notice faint browning around the rim and a gentle bubbling at the center. After the temp drops to 325º, the interior finishes cooking more gently, producing a creamy, uniformly set center. Use the knife test near the center, and expect a slight jiggle that will firm as it cools. Overbaking dries the custard, so remove it when a clean knife indicates doneness. If the crust browns too quickly, tent with foil to prevent burning while the center finishes cooking.
Notes
- Swap the cheese Try different melters like Gruyere for a nutty profile or fontina for creaminess, keeping the quantity the same so the custard to cheese ratio remains balanced.
- Make it lighter Replace some heavy cream with additional half and half to reduce richness while keeping the custard silky, but keep at least some cream so the texture does not become rubbery.
- Boost the veggies Increase the amount of spinach and bell pepper slightly, but ensure they are well cooked and drained to prevent excess liquid affecting the set.
- Blind bake for crispness If your pastry seems delicate, blind bake the shell for 8 to 10 minutes, then cool slightly before filling to protect the bottom from sogginess.
- Make ahead Assemble the quiche up to the point of baking, cover, and refrigerate overnight; bake from chilled and add a few extra minutes to ensure it reaches a clean set.