• 6 Ingredients
  • 8 ounces uncooked penne pasta
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  • 1/4 cup butter or margarine
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  • 1/2 medium sweet onion, chopped
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  • 1 (8-ounce) loaf mexican-style p...
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  • 1 (8-ounce) container sour cream
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  • Show all (6)
  • Nutrition 100% match
  • Calories per gram: 2.3
  • Total fat: High
  • Show all