Which appetizer is known for being filled with cheese and jalapeños?

The appetizer known for being filled with cheese and jalapeños is Rattlesnakes. This dish features a combination of spicy jalapeños stuffed with a blend of cheeses, creating a flavorful and all-around rich experience. The preparation typically involves the jalapeños being battered and fried, resulting in a crispy exterior that contrasts beautifully with the creamy, cheesy filling.

Other options like Fried Pickles, Cactus Blossom, and Cheese Fries are notable appetizers at Texas Roadhouse, but they do not focus on the combination of jalapeños and cheese that defines Rattlesnakes. Fried Pickles consist of battered, fried pickles; Cactus Blossom is a large, fried onion served with dipping sauce; and Cheese Fries feature fries topped with melted cheese and sometimes bacon. None of these items incorporate jalapeños in the same way Rattlesnakes do, making Rattlesnakes the correct choice for this question.