Aromatic cumin seeds and Comté cheese enhance the deep flavors of this caramelized onion quiche. The easy, crunchy whole wheat crust makes the dish wholesome and approachable.
This Cumin and Caramelized Onion Quiche offers a memorable alternative to classic quiche flavors like ham and cheese or spinach and mushroom. Combining slow-cooked sweet onions with the warm, toasty note of cumin seeds creates a comforting, layered taste that always impresses.
The whole wheat crust is surprisingly easy to make — you mix it with a fork — and its rustic, nutty character provides a satisfying crunch without the heaviness of a butter-based shortcrust. Olive oil in the dough adds flavor and makes the crust simple and forgiving to prepare, even for beginner bakers. The crust is also vegan, so it adapts well to varied dietary preferences and can be used for other savory tarts or galettes.
What makes this quiche especially versatile is how well it works in many situations. It’s substantial enough to star at a brunch, yet light enough for a weeknight lunch or dinner when paired with a crisp citrusy salad. Leftovers are convenient to pack for work or school, and the flavors deepen after a day in the fridge.
This quiche is ideal for make-ahead cooking. You can prepare the crust and caramelized onions in advance, refrigerate them, and assemble just before baking. It also freezes beautifully: freeze a whole quiche or individual slices and reheat when needed for effortless meals.
Helpful Tips for Making this Cumin and Caramelized Onion Quiche
What are flaxseeds and why use them in the crust?
Flaxseeds are small, nutrient-rich seeds often used in vegan baking as an egg substitute. In this recipe they are optional, but ground flaxseeds add a gentle nutty note and extra fiber to the crust. If you don’t have them, the dough remains tasty and workable without them.
What are cumin seeds and where to find them?
Cumin seeds are small, aromatic seeds with a warm, earthy flavor commonly used in Middle Eastern, Mexican, and Indian cuisines. They are available in most grocery stores’ spice aisles. In this quiche, whole cumin seeds deliver little bursts of toasty warmth that complement the sweet, jammy onions. If you only have ground cumin, it works fine too, though the visual and textural contrast from whole seeds is appealing.
What does Comté cheese taste like? Can I substitute another cheese?
Comté is a French cow’s-milk cheese with a firm texture and complex, nutty flavor that melts beautifully into a quiche filling. If Comté isn’t available, Gruyère is a close substitute with a similar nuttiness and slightly creamier profile. Other semi-hard cheeses such as Emmental or a sharp white cheddar will also work, but Comté or Gruyère are preferred for their smooth melting and depth of flavor.
Do I need sweet onions? What difference do they make?
Sweet onions such as Vidalia or Walla Walla are ideal for caramelizing because their higher sugar content produces soft, jammy, richly sweet results. Regular yellow onions can be used in a pinch, but they tend to be sharper; if using yellow onions, add a teaspoon of sugar at the start to help the caramelization and round out the flavor.
Can I use store-bought shortcrust pastry?
Yes. If you’re short on time, a good-quality store-bought shortcrust pastry is a fine substitute. Be sure to blind bake it before adding the filling to prevent a soggy bottom. The caramelized onion filling is flavorful enough to shine with any reliable crust, though the whole wheat olive oil crust adds a pleasant rustic note if you have the time to make it.
Can this quiche be made ahead and frozen?
Yes. Quiche stores and freezes well. You can bake it fully, cool it, and freeze whole or in slices. Thaw overnight in the refrigerator and reheat in a 325°F (160°C) oven for about 15 minutes to restore crust crispness and warm the filling. Alternatively, prepare the crust and onions ahead and assemble before baking.
Serving Suggestions
This quiche pairs beautifully with fresh, bright sides. For brunch, serve with a simple green salad dressed with a citrus vinaigrette to cut through the richness. Seasonal options work well: cucumber, tomato, and basil salad in summer; warm kale and beet salad in fall; or orange and fennel salad in winter. Fruit salad or roasted asparagus also make excellent companions.
Whether you serve it for a leisurely weekend brunch, pack slices for lunches, or freeze portions for busy evenings, this Cumin and Caramelized Onion Quiche is easy, adaptable, and packed with satisfying flavor. Try it once and it’s likely to become a regular favorite.
Cumin and Caramelized Onion Quiche Recipe
Ingredients
For the whole wheat and olive oil crust
- 2 cups whole wheat flour
- 1 tsp kosher salt (or fine sea salt)
- 1 tsp Herbes de Provence
- 1 tsp ground flaxseeds (optional)
- 1/4 cup extra-virgin olive oil
- 1/2 cup ice water
For the caramelized onion quiche filling
- 1 tbsp extra-virgin olive oil, plus more for greasing the pan
- 2 lb sweet onions (such as Vidalia), thinly sliced
- 1 tsp kosher salt
- 3 large eggs
- 3/4 cup light cream (15–18% m.f.)
- Freshly ground black pepper
- 2 tsp cumin seeds
- 5 oz freshly grated Comté cheese (about 1½ cups), or Gruyère, Emmental, or sharp white cheddar
Instructions
For the whole wheat and olive oil crust
- Lightly oil a 9- to 10-inch (23 to 25.5 cm) tart pan. A pan with a removable bottom makes unmolding easier.
- In a mixing bowl, combine the flour, salt, herbs, and flaxseed (if using). Add the olive oil and mix with a fork. Add the ice water and mix until absorbed, then knead lightly until the dough forms a ball.
- Turn the dough onto a lightly floured surface. Roll into a circle large enough to line your tart pan, turning the dough periodically and adding a little flour if it becomes sticky. Avoid overworking the dough.
- Transfer the dough into the prepared pan, press to line it neatly, and refrigerate while you prepare the filling.
For the caramelized onion quiche filling
- In a large nonstick skillet over medium heat, warm 1 tbsp extra-virgin olive oil. Add the onions and 1/2 tsp salt. Cover, reduce heat to low, and cook for 30 minutes, stirring occasionally, until the onions are soft and translucent.
- Remove the lid, increase heat to medium-high, and cook for another 10–15 minutes, stirring often, until the onions are deeply browned and caramelized. Let cool to room temperature. (Onions can be made up to 3 days ahead or frozen up to 1 month.)
To blind bake the whole wheat crust
- Preheat the oven to 350°F (175°C).
- Remove the crust from the fridge and prick the bottom with a fork. Line with parchment and fill with pie weights or dry peas. Bake 10 minutes.
- Remove weights and parchment, return the crust to the oven and bake 5 more minutes until set. Remove and set aside while you finish the filling.
To assemble and bake the quiche
- In a medium bowl, whisk together the eggs and cream. Season with the remaining 1/2 tsp salt, pepper, and cumin seeds. Fold in the grated cheese and cooled caramelized onions. Pour the filling into the blind-baked tart shell and spread evenly.
- Place the tart pan on a baking sheet to catch any spills. Bake 35 minutes, until the top is golden and the center is slightly jiggly. Turn the oven off and leave the quiche inside for 10 minutes to finish setting. Transfer to a wire rack and cool 15–20 minutes before slicing.
- Serving suggestion: serve warm with a simple green salad dressed with citrus vinaigrette. Seasonal sides include cucumber–tomato–basil salad in summer, warm kale and beet salad in fall, or orange and fennel salad in winter.
- Make-ahead tip: make up to two days ahead and refrigerate once cool. To freeze, wrap tightly and store up to 1 month. Thaw overnight in the refrigerator and reheat in a 325°F (160°C) oven for about 15 minutes.
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