INGREDIENTS
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4 tablespoons olive oil, divided
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1 cup finely chopped sweet onion
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1 garlic clove, minced
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2 teaspoons dried oregano
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1 (28-oz.) can crushed tomatoes in puree
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2 teaspoons sugar
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1 1/2 teaspoons salt, divided
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1 teaspoon pepper, divided
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1/2 cup heavy whipping cream
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8 boneless skinless chicken breast halves
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1 1/2 cups shredded mozzarella cheese
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1 cup grated Parmigiano-Reggiano cheese