This easy spaghetti sauce is a crockpot sauce, made with ground beef, italian sausage, diced tomatoes, and chopped vegetables, along with other ingredients. Serve this delicious sauce mixture with spaghetti or linguine. Or serve it with spaghetti squash or spiralized summer squash or zucchini. Make a double batch and put the remaining sauce in an airtight container (or several single-serve containers). Store it in the freezer for as long as four to six months.