Ingredients
- 2 tablespoons good olive oil, plus extra for greasing the pans
- 1 1/2 cups chopped leeks, white and light green parts, washed and spun dry
- 4 ounces sliced Italian prosciutto, coarsely chopped
- 8 ounces fresh baby spinach
- 2 1/2 tablespoons julienned fresh basil leaves
- 1 tablespoon freshly squeezed lemon juice
- 1 1/2 cups (4 ounces) grated Italian Fontina cheese (6 ounces with rind)
- 8 extra-large eggs
- 1 1/2 cups half-and-half
- Kosher salt and freshly ground black pepper
- 4 tablespoons freshly grated Parmesan cheese
Directions
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Preheat the oven to 375 degrees. Brush a standard 12-cup muffin tin with olive oil, including the top of the pan.
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Heat the olive oil over medium heat in a large (12-inch) sauté pan. Add the leeks and sauté for 3 minutes, until tender. Add the prosciutto and sauté for 2 to 3 minutes, breaking it up with a fork. Add the spinach, tossing with tongs, then cover the pan and cook for 3 minutes, tossing once while it cooks, until the spinach is all wilted. Off the heat, stir in the basil and lemon juice and set aside for 5 minutes. Divide the mixture with tongs among the 12 muffin cups, leaving any liquid behind. Sprinkle the Fontina evenly on top.
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In a 4-cup liquid measuring cup, beat the eggs, half-and-half, 1/2 teaspoon salt, and 1/4 teaspoon pepper together with a fork. Pour the egg mixture evenly over the filling in each cup, filling the muffin cups to the top. Sprinkle each frittata with the Parmesan cheese.
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Bake the frittatas for 20 to 25 minutes, until puffed and lightly browned on top. If you insert a toothpick in the middle, they should feel firm. Cool for 5 minutes, remove with a small sharp knife onto a serving plate, and serve hot or warm.