Asparagus and Gruyère Tart Recipe

<ul class="ingredients-main-list"><li class="ingredients-single-item">For the pastry:</li><li class="ingredients-single-item">200g plain flour</li><li class="ingredients-single-item">100g cold unsalted butter, cubed</li><li class="ingredients-single-item">1/4 tsp salt</li><li class="ingredients-single-item">1 large egg yolk</li><li class="ingredients-single-item">2-3 tbsp ice-cold water</li><li class="ingredients-single-item">For the filling:</li><li class="ingredients-single-item">400g fresh asparagus spears</li><li class="ingredients-single-item">150g Gruyère cheese, grated (or Emmental)</li><li class="ingredients-single-item">3 large eggs</li><li class="ingredients-single-item">200ml double cream</li><li class="ingredients-single-item">100ml whole milk</li><li class="ingredients-single-item">2 tbsp fresh thyme leaves</li><li class="ingredients-single-item">1/2 tsp freshly grated nutmeg</li><li class="ingredients-single-item">1/2 tsp salt</li><li class="ingredients-single-item">1/4 tsp freshly ground black pepper</li></ul>

<ul class="equipment-main-list"><li class="equipment-single-item">23 x 33cm rectangular tart tin with removable base</li><li class="equipment-single-item">Baking beans or rice (for blind baking)</li><li class="equipment-single-item">Baking parchment</li><li class="equipment-single-item">Rolling pin</li><li class="equipment-single-item">Food processor (optional)</li></ul>

<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Start by making the pastry. In a food processor (or by hand), combine the flour, salt, and cold butter cubes. Pulse until the mixture resembles fine breadcrumbs. The cold butter is crucial here – it creates steam pockets during baking that result in flaky pastry layers.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Add the egg yolk and 2 tablespoons of ice-cold water, pulsing until the dough just begins to come together. If needed, add the remaining tablespoon of water, but be careful not to overwork the dough as this will develop gluten and make your pastry tough.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Turn the dough onto a lightly floured surface and shape into a disc. Wrap in cling film and refrigerate for at least 30 minutes. This resting period allows the gluten to relax and prevents shrinkage during baking.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>Preheat your oven to 200°C (180°C fan). Roll out the chilled pastry on a lightly floured surface to about 3-4mm thickness, creating a shape large enough to line your tart tin with some overhang. Carefully transfer the pastry to the tin, gently pressing into the corners without stretching it. Trim the excess, leaving a small overhang to allow for shrinkage.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Prick the base all over with a fork (this prevents air bubbles), then line with baking parchment and fill with baking beans or rice. Blind bake for 15 minutes, then remove the parchment and beans and bake for another 5-7 minutes until the pastry is dry and just beginning to color at the edges.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>While the pastry is baking, prepare your asparagus. Trim the woody ends and blanch in boiling water for just 2 minutes. Immediately plunge into ice water to stop the cooking process and preserve the vibrant green color. Pat dry thoroughly with kitchen paper.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Reduce the oven temperature to 180°C (160°C fan). Sprinkle two-thirds of the grated Gruyère evenly over the base of the partially baked pastry case.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>In a bowl, whisk together the eggs, cream, milk, thyme leaves, nutmeg, salt, and pepper until well combined. This custard base will set to a silky texture during baking while carrying the flavors of herbs and cheese throughout.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>Pour about two-thirds of the egg mixture over the cheese in the pastry case. Arrange the asparagus spears in a neat pattern (tips all facing one direction or alternating), then pour over the remaining egg mixture, being careful not to flood the tart. The asparagus should partially protrude from the custard for a beautiful finish.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Sprinkle the remaining Gruyère over the top and bake for 25-30 minutes until the filling is just set with a slight wobble in the center. The custard will continue to set as it cools, so it's better to slightly underbake than overbake, which can cause the filling to become rubbery.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Allow the tart to cool for at least 15 minutes before removing from the tin – this resting period allows the custard to fully set and makes slicing cleaner. Serve warm or at room temperature for the best flavor experience. The tart can be made a day ahead and gently reheated before serving.</li></ol>