Grilled Sausage and Ricotta Pizza Sandwich Recipe

Name: Grilled Sausage and Ricotta Pizza Sandwich Recipe
Ingredients: For the Bread; 1/4 cup semolina flour; 2 (1-pound) store-bought pizza dough (See Notes); 4 tablespoons (2 ounces) unsalted butter, melted; 6 tablespoons canned Parmesan cheese; 1 tablespoon dried oregano; 3/4 teaspoon garlic powder; For the Sauce; 3 tablespoons olive oil; 1 small yellow onion, finely chopped; 2 tablespoons tomato paste; 3 garlic cloves, minced; 2 teaspoons dried oregano; 1 teaspoon red pepper flakes; 2 (28-ounce) cans plum tomatoes, coarsely chopped; Salt and pepper; 1 cup fresh basil leaves; For the Sausages; 2 tablespoons olive oil; 4 Italian sausages, split lengthwise; For the Assembly; 4 ounces whole milk ricotta, crumbled