I recommend using a marinara or a smooth tomato sauce. The recipe already has chunks of meat, which might not work well with a chunky meat sauce.u003cbr/u003eu003cbr/u003eYou can also use a homemade sauce like this u003ca href=u0022https://www.organizeyourselfskinny.com/slow-cooker-marinara-sauce/u0022u003eslow cooker marinarau003c/au003e if you have some in the freezer.u003cbr/u003eu003cbr/u003eHowever, you can use jarred sauce if you don't have any homemade sauce available. My favorite jarred sauce for this recipe is Rao's Marinara!