Creamy Pesto-Stuffed Shells
INGREDIENTS
•
jumbo pasta shells, uncooked
•
lean ground beef
•
onion, chopped
•
(10 oz.) PHILADELPHIA Creamy Pesto Cooking Creme, divided
•
POLLY-O Natural Part Skim Ricotta Cheese
•
KRAFT Shredded Mozzarella Cheese with a TOUCH OF PHILADELPHIA, divided
•
KRAFT Grated Parmesan Cheese
•
spaghetti sauce, divided
•
milk
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