Heat oven to 350°. Place sausage in a small baking pan. Brush with olive oil. Bake until browned and cooked through, 20-25 minutes. Remove from oven and split each lengthwise.
In a small bowl combine mayonnaise and Sriracha. Spread each roll with 2 tablespoons mayonnaise mixture; lay sliced sausages on bread. Top each sausage with 1/4-cup Pickled Blueberries and Onions and divide the cilantro equally on the sandwiches. Serve immediately.
Ingredients
4 links (4 ounces each) sweet or hot Italian sausage