"Here's a true crowd pleaser: pasta shells in a simple sauce of ground beef, tomatoes and pesto, layered with mozzarella and Parmesan and baked until bubbly. Fusilli or orecchiette would work well here, too...."
INGREDIENTS
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1 tablespoon cooking oil
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1 onion, chopped
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1 pound ground beef
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2 cups chopped canned tomatoes, drained (from one 28-ounce can)
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1 1/2 teaspoons salt
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1/2 cup store-bought or homemade pesto
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3/4 pound medium pasta shells
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6 ounces mozzarella cheese, grated (about 1 1/2 cups)
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1/4 cup grated Parmesan