Preheat oven to 400°. Remove and finely chop mushroom stems (about 1-1/4 cups); reserve mushroom caps.
Melt I Can't Believe It's Not Butter!® Spread in 12-inch nonstick skillet over medium-high heat and cook chopped stems, pear and shallot, stirring occasionally, 5 minutes or until tender. Stir in cheese, parsley, salt and pepper*.
Evenly stuff reserved mushroom caps with pear mixture, then arrange on baking sheet. Bake 15 minutes or until mushrooms are tender. Garnish, if desired, with Parmesan cheese shavings.
*TIP: Recipe can be made up to 1 day ahead up to this point. Refrigerate stuffing until ready to bake. Continue as above.
Cost per recipe*: $5.07.
Cost per mushroom*: $0.23.
*Based on average retail prices at national supermarkets.