INGREDIENTS
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Kosher salt
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2 medium potatoes, peeled and cut into 1-inch pieces
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1 large bunch broccoli, florets and some chopped stems
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12 ounces bow-tie pasta
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4 tablespoons unsalted butter
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2 leeks, white and light green parts only, sliced into half-moons
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Freshly ground pepper
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1 head Boston lettuce, torn
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1 1/2 cups grated fontina cheese (about 4 ounces)
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1/2 cup grated Parmesan cheese (about 1 ounce), plus more for topping