Step 1

Heat oven to 350ºF.

Step 2

Spray 1-1/2-qt. soufflé dish with cooking spray; coat evenly with 1 Tbsp. Parmesan.

Step 3

Blend egg yolks, milk, cream cheese, cheddar and remaining Parmesan in blender on high speed 30 sec. or until smooth. Pour into large bowl.

Step 4

Beat egg whites and cream of tartar in separate bowl with mixer on high speed until stiff peaks form. Gently stir into cheese mixture; pour into prepared soufflé dish. With tip of spoon, make slight indentation or "track" around top of soufflé 1 inch from edge to form "top hat."

Step 5

Bake 35 min. or until top is puffed and golden brown. Serve immediately.