From Great Food Fast, the great little cookbook from the kitchens of Martha Stewart Living. Try to find asparagus of uniform width. Makes one tart that serves 4-6 people for lunch, with a side salad or bowl of soup.
1 sheet frozen puff pastry
2 cups (approx. 5-1/2 oz) gruyere, Emmental or swiss cheese, shredded
1-1/2 pounds medium asparagus
1 Tbsp olive oil
Salt and pepper
Preheat oven to 400°F. On a floured surface, roll pastry into a 16 x 10 inch rectangle. Trim uneven edges. Place the pastry on a baking sheet. With a sharp knife score the dough 1 inch in from the edges to mark a rectangle. Using a fork, pierce the dough inside the markings at half-inch intervals. Bake until golden, about 15 minutes.
Remove the pastry shell from the oven, and sprinkle with cheese. Trim the bottoms of the asparagus spears to fit crosswise inside the tart shell; arrange in a single layer over the cheese, alternating ends and tips. Brush with oil, and season with salt and pepper. Bake until spears are tender, 20 to 25 minutes.