Crustless Ham and Asparagus Quiche with Gruyere Cheese

INGREDIENTS

1 tbsp

butter

1 tbsp

olive oil

leek, thinly sliced (white and light green parts only)

1/2 lb

asparagus, cut into 1-inch pieces

6 oz

ham, cubed, about 1 cup

large eggs

1 1/2 cups

heavy cream

1/4 tsp

salt

fresh ground black pepper,

3 oz

shredded Gruyere cheese, about 1 cup