Weeknight Asparagus & Mustard-Cream Slab Galette

Instructions

1. 1

   Toss 1.5 cups all-purpose flour and 1 tsp flaky sea salt in a large bowl. Smash in 10 tbsp cold cultured butter until you have walnut-sized, flat pieces. Drizzle in 1 tbsp apple cider vinegar and 1/4 cup ice water, tossing with your hands until it just holds together when squeezed. Butter is not a garnish here—leave the chunks big. They steam in the oven to create lacy, shattered layers. Overwork it, and the crumb goes tight like a bad alibi.

   10 min

   Tip: If the butter starts feeling greasy or soft, immediately put the bowl in the freezer for 5 minutes.

2. 2

   Dump the shaggy dough onto the counter. Pat it into a rough rectangle and fold it in thirds like a business letter. Turn it 90 degrees and fold in thirds one more time. Wrap tightly in parchment or plastic and stash it in the fridge. The fridge is your friend; cold dough equals flake.

   30 min

   Tip: This is lamination-lite. Two folds give you cafe-level layers with zero compromise.

3. 3

   Place a heavy, rimless baking sheet (or an inverted rimmed baking sheet) on the lowest oven rack. Preheat your oven to 400°F (200°C). Baking directly on screaming hot metal shocks the pastry, ensuring a crispy bottom crust.

   30 min

   Tip: Don't skip this. A preheated pan is the absolute key to avoiding a soggy bottom.

4. 4

   Trim your 1 lb thick asparagus spears by snapping off the woody ends—they will naturally break exactly where they need to. Toss them on a plate with 1 tbsp olive oil and a pinch of salt. The oil prevents the delicate tips from burning to a crisp before the pastry is done.

   5 min

   Tip: Always choose thick spears for roasting; pencil-thin asparagus will turn to string in a 400°F oven.

5. 5

   In a small bowl, whisk together 1/3 cup crème fraîche, 2 tbsp whole grain Dijon mustard, 1 tbsp fresh tarragon, and 1/2 tsp black pepper. This sharp, tangy base cuts through the butter crust and anchors the vegetables.

   5 min

   Tip: Crème fraîche (cultured cream) won't split under high heat the way regular cream might.

6. 6

   Pull the chilled dough from the fridge. On a large sheet of parchment paper, roll it into a 14x10-inch oval or rectangle, about 1/8-inch thick. If the dough fights you and springs back, walk away. Let time do the work. Give it 5 minutes to relax on the counter, then resume.

   5 min

   Tip: Roll out directly on the parchment so you don't have to awkwardly transfer the fragile dough later.

7. 7

   Spread the mustard cream evenly over the dough, leaving a generous 1.5-inch border. Tile the oiled asparagus straight across the cream in a single, tight layer. Fold the dough border up and over the ends of the asparagus, pleating the corners so they hold. Brush the exposed pastry edges with 1 tbsp heavy cream.

   5 min

   Tip: Keep the asparagus closely packed—they shrink slightly as they roast.

8. 8

   Using a peel or a flat cutting board, carefully slide the parchment with the galette directly onto the preheated baking sheet in the oven. Bake until the crust is deeply golden brown and the asparagus is tender and visibly blistered. Don't pull it early; pale pastry is a tragedy.

   35 min

   Tip: Look for the heavy cream wash to turn a rich, lacquered mahogany. That's flavor.

9. 9

   Remove the galette from the oven. While it's still piping hot, immediately shower it with 1 oz Pecorino Romano and 1 tsp lemon zest. The residual heat will melt the cheese into a savory lacing over the spears. Let it rest for 10 minutes to let the cream base set before slicing into squares.

   10 min

   Tip: Slicing too early causes the mustard cream to run. Patience pays out in neat, beautiful slices.