This Asparagus and Tomato Cheese Melt is a simple half sandwich made with salty prosciutto, sweet tomatoes, smooth buttery cheese, and roasted or grilled asparagus. The pesto-mayo spread covering the Ciabatta bread brings it all home.
Preheat broiler with rack 4-6 inches from the heat.
Whisk together mayonnaise and pesto in a bowl until thoroughly combined. Set aside.
Drizzle asparagus with olive oil; season with salt and pepper. Cook, turning often, on a grill pan for about 3 minutes, or until crisp-tender. (Or roast in the oven or over a grill.)
Spread 2 tablespoons pesto mixture onto 1 side of each bread slice. Layer each slice with 4 asparagus spears, 1 prosciutto slice, 1 tomato slice, and 1 cheese slice. (If your rolls are larger, you can easily just double all the ingredients.)
Place on a baking sheet; broil 3 minutes or until cheese melts and is golden (watch it carefully so it doesn't burn.)