
We use a store-bought crust in this tart for ease.
Recipe information
Total Time
2 hours (includes baking and cooling time)
Yield
Makes 8 servings
Ingredients
Special Equipment
Preparation
Step 1
Roll out pie crust on a lightly floured surface to a 12" round. Transfer to tart pan and press onto bottom and up sides. Bake crust according to package instructions. Let cool in pan on a wire rack.
Step 2
Preheat oven to 425°F. Line a baking sheet with foil. Cut off top 1 1/2" of asparagus tips; reserve. Slice stalks into 1/4" rounds. Cut white bulbs from spring onions; trim and quarter (halve if using scallions). Slice pale-green parts into 1/4" pieces. Toss asparagus tips and spring onion bulbs in a small bowl with 2 tablespoons oil; season with salt and pepper. Place in a single layer on prepared sheet; roast, turning once, until onions begin to brown and asparagus is bright green and tender, 12-15 minutes. Transfer to a small bowl. Reduce oven temperature to 375°F.
Step 3
Meanwhile, heat remaining 1 tablespoon oil and butter in a medium skillet over medium heat. Add sliced asparagus and pale-green parts of spring onions; season with salt and pepper. Cook, stirring often, until onions are soft and asparagus is bright green and tender, 6-8 minutes. Let cool slightly in pan. Spread evenly over bottom of tart crust.
Step 4
Whisk cheese and next 5 ingredients in a medium bowl. Season with salt and pepper. Whisk in eggs. Pour over vegetables. Scatter asparagus tips and spring onion bulbs over.
Step 5
Bake tart until edges of crust are golden brown and filling is set, 20-22 minutes. Let cool in pan for 20 minutes or up to 4 hours.
Step 6
Remove sides of pan. Serve tart warm or at room temperature.