Sarah uses fresh veggies mixed with sharp gruyere in this delicious quiche.
Preheat oven to 350 degrees, with rack in lowest position. In a large skillet, melt butter over medium. Add leek and asparagus; season with salt and pepper. Cook, stirring occasionally, until asparagus is crisp-tender, 6 to 8 minutes; let cool.
In a large bowl, whisk together eggs, half-and-half, 1/2 teaspoon salt, teaspoon pepper, and a pinch of nutmeg. Place pie crust on a rimmed baking sheet. Sprinkle with cheese; top with asparagus mixture. Pour egg mixture on top.
Bake until center of quiche is just set, 50 to 60 minutes, rotating sheet halfway through. Let stand 15 minutes before serving.
To make sure the vegetables are distributed evenly, spread them in the crust before pouring in the egg mixture.