Try this Crock Pot Spaghetti Sauce recipe, or contribute your own.
Home cooks frequently scale slow cooker recipes by simply doubling every liquid and spice linearly, which leads to overly watery sauces because moisture does not evaporate at the same rate in a sealed crock pot. Brown the ground beef and Italian sausage in batches over medium heat to prevent the skillet from overcrowding, ensuring proper caramelization before everything transfers to the basin. Slow cookers require adequate headspace to reach a safe internal temperature without boiling over, meaning a six-quart appliance safely handles up to double the listed quantities.
When halving the ingredients, reduce the cooking time on low heat by roughly one to two hours to avoid over-reducing the tomato sauce and scorching the bottom. Dietary modifications are straightforward here since the olive oil easily substitutes for neutral vegetable oils, and gluten concerns only arise if serving the sauce over standard wheat pasta instead of certified gluten-free alternatives or polenta.