Yes, you can. Assemble the sliders as instructed in the recipe, but do not bake them. Place the sliders in a single layer on a baking sheet and freeze for at least 2 hours or until solid. Once the sliders are frozen, you can transfer them to a freezer bag or container and store them in the freezer for up to 3 months. To thaw, place the sliders in the refrigerator overnight. Once thawed, you can bake them according to the recipe instructions.