Preparing a Texas Roadhouse Cactus Blossom is simple and can save significant funds over visiting the restaurant for the fried onion appetizer. The Cactus Blossom, served at Texas Roadhouse restaurants, is very similar to a Bloomin' Onion, served at Outback Steakhouse, and Awesome Blossom, served at Chili's, and a Texas Rose, served at Lonestar Steakhouse. Learning how to make an onion blossom like they do at Texas Roadhouse is simple. The Texas Roadhouse Onion Blossom recipe features a whole onion which is sliced to separate the petals, then coated in a seasoned batter and deep fried. The finished dish gives the appearance that the onion has "bloomed" and opened up, exposing the many crispy petals within. Serve the Cactus Blossom with the spicy dipping sauce recipe made with horseradish that they use for the onion blossom at Texas Roadhouse or substitute ranch dressing or any other type of dip. For a more kid-friendly taste, ketchup or Thousand Island dressing my also be used as dipping sauces.