Baked Ziti with Italian Sausage Recipe

Ingredients

• 1 lb. bulk Italian sausage
• ¼ cup olive oil
• 1 ½ cups diced onions
• ¼ cup chopped fresh garlic
• 2 tsp. dried Italian seasoning
• 1 tsp. red pepper flakes
• 2 cans whole tomatoes in purée, such as Cento (28 oz. each ), crushed
• 8 oz. mascarpone cheese
• Salt and black pepper to taste
• 1 lb. ziti pasta
• 1 lb. provolone, cut into ½-inch cubes
• 1 cup grated Parmesan