Baked Welsh Leek and Cheddar Tart
A savory tart featuring tender leeks and sharp Cheddar cheese in a flaky pastry crust, perfect for brunch or light lunch. This british-inspired vegetarian ready in about 50 minutes layers unsalted butter, grated sharp Cheddar cheese, large eggs into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 320 calories and feeds 6, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1 sheet (9x12 inches), thawed puff pastry sheet
- 3 medium, white and light green parts only, sliced leeks
- 2 tbsp unsalted butter
- 1 cup, grated sharp Cheddar cheese
- 3 large eggs
- 1/2 cup heavy cream
- 1 tsp sea salt
- 1/2 tsp black pepper
- 1 tsp fresh thyme leaves
Instructions
- Step 1: Preheat oven to 375°F. Roll out 1 sheet thawed puff pastry to fit a 9-inch tart pan with removable bottom, pressing into corners and trimming edges.
- Step 2: In a large skillet, melt 2 tablespoons unsalted butter over medium heat. Add 3 sliced medium leeks and sauté for 8-10 minutes until soft and translucent but not browned.
- Step 3: Spread the cooked leeks evenly over the pastry base. Sprinkle 1 cup grated sharp Cheddar cheese on top.
- Step 4: In a bowl, whisk together 3 large eggs, 1/2 cup heavy cream, 1 teaspoon sea salt, 1/2 teaspoon black pepper, and 1 teaspoon fresh thyme leaves until smooth.
- Step 5: Pour the egg mixture gently over the leeks and cheese in the tart shell.
- Step 6: Bake for 30-35 minutes until the filling is set and the pastry edges are golden brown.
- Step 7: Allow tart to cool for 10 minutes before slicing and serving warm or at room temperature.
Frequently asked questions
How long does Baked Welsh Leek and Cheddar Tart take to make?
Total time is about 50 minutes (15 min prep + 35 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.
How do I store leftover Baked Welsh Leek and Cheddar Tart?
Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.
Can I substitute ingredients in Baked Welsh Leek and Cheddar Tart?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Baked Welsh Leek and Cheddar Tart for a different number of people?
The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Baked Welsh Leek and Cheddar Tart?
British vegetarian like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
