Yes, you certainly can. You can freeze your strawberries with cream cheese filling COVERED for up to 2 hours. Any longer than this and they might get mushy. When the weather is hot and muggy, this is the preferred method, especially if serving at a picnic outdoors. After you stuff your strawberries, place them on a lined baking sheet in the freezer. From 30 minutes to 2 hours in the freezer gives your strawberries and the filling a chance to firm up Just allow your cheesecake stuffed strawberries to come to temperature for about 20 minutes for a delicious frosty treat.