3 sausage eggplant stuffed shells sauce Recipes

olive oil, sweet italian sausage, casings removed, chopped onions, eggplant, cut into 1/2-inch cubes (about 7 cups cubed ), salt, crushed red pepper flakes, minced garlic, ricotta cheese or 1/2 cup mascarpone cheese, fresh spinach, blanched, squeezed dry, and chopped (about 2/3 cup chopped ), freshly grated parmesan cheese, sugar, jumbo pasta shells (about 18 shells ), italian crushed tomatoes, heavy cream, chopped fresh basil leaf, coarsely grated fontina cheese

jumbo pasta shells (12 oz package), links hot sausage or 3 links sweet italian sausage, casings removed, onion, finely chopped, white button mushrooms, finely chopped, part-skim ricotta cheese, egg, kosher salt, italian cheese blend, shredded, baby spinach leaves, eggplants, cut into 1/2 inch dices, garden-style pasta sauce