1 cup leeks light white green thinly sliced ( and parts)
0.5 cup milk
1 tablespoon olive oil
0.3 cup parmesan cheese grated
1 cup potatoes diced cooked
0.3 teaspoon salt
1 cup sausage diced cooked (see Notes)
Equipment
frying pan
paper towels
oven
whisk
slotted spoon
Directions
Preheat oven to 45
In a 10-in. ovenproof nonstick frying pan or well-seasoned cast-iron skillet, heat olive oil over medium heat, add sausage and saute until lightly browned, 7 to 10 minutes.
Transfer sausage with a slotted spoon to paper towels; reserving oil in pan.
Whisk together eggs, milk, chives, salt, and pepper. Stir in sausage and potato. Set aside.
Bring skillet to medium-high heat.
Add leeks and saut in reserved oil until softened, 1 to 2 minutes. Reduce heat to medium.
Add egg mixture and stir to combine. Cook 1 minute, then gently stir in 1/2 cup fontina and the parmesan. Cook without stirring until edges of frittata are set and the center is still a bit soft, about 2 minutes (edges should appear firm when pan is gently shaken; the top layer should appear wet).
Sprinkle remaining 1/4 cup fontina over top and transfer skillet to preheated oven.
Bake until eggs are fully set and the top is light golden brown, 5 to 7 minutes. If top has not browned, broil frittata about 5 in. from heating element, keeping oven door ajar, until lightly golden, about 1 minute.