Yes, you can make Texas Roadhouse Cactus Blossom ahead of time. To do this, prepare the onion wedges as directed in the recipe and dip them in the batter. Place them on a parchment-lined baking sheet and freeze for 2-3 hours.  Once frozen, transfer to a freezer-safe bag or container and store in the freezer for up to 3 months. When ready to serve, preheat the oven and bake as directed in the recipe. This will help keep the Cactus Blossom crispy and delicious!