Jalapeno Cheese Dip
["1 medium onion, chopped", "1 Tbsp. vegetable oil", "2 c. shredded Monterey Jack cheese", "2 c. shredded Cheddar cheese", "1/2 c. half and half", "2 Tbsp. chopped jalapeno peppers"]
["Place onion and oil in a 1 1/2-quart dish.", "Cover; microwave for 2 to 3 minutes on High (to make onions tender).", "Stir in rest of the ingredients.", "Reduce temperature to Medium; cook 3 to 6 minutes.", "Stir every 2 minutes.", "Serve with taco chips."]
["onion", "vegetable oil", "shredded Monterey Jack cheese", "Cheddar cheese", "jalapeno peppers"]