Asparagus Popover - cooking recipe

Ingredients

1 lb asparagus
2 tablespoons butter
1/2 cup milk
3 large eggs, at room temperature
1/2 cup flour
1/2 teaspoon salt
1/2 teaspoon pepper
1 pinch sugar
3 ounces gruyere cheese, shredded

Preparation

Preheat oven to 425\u00b0F.
In a medium saucepan, add 2 inched of salted water; bring to a boil. Add the asparagus and cook until crisp-tender, about 3 minutes.
Drain and rinse with cold water, then pat dry with paper towels.
Cut the spears crosswise into thirds.
In a medium cast-iron skillet, add the butter.
Place the skillet in the oven to melt the butter.
In a medium bowl, microwave the milk on high for 30 seconds.
Whisk in the eggs, then the flour, salt, pepper, and sugar.
Add the asparagus pieces to the hot cast-iron skillet and pour the batter on top.
Sprinkle with half of the cheese and bake until puffed and golden-brown, 18 to 20 minutes.
Top with the remaining cheese.