the cans of diced tomatoes and pour them, juice and all, directly over the raw ground beef in the slow cooker, spreading them out so they cover the meat. This is what keeps the beef moist and creates that cozy, tomato-rich base.
Pour the tomato sauce over the diced tomatoes, then gently stir just the tomatoes and sauce together on top, trying not to disturb the layer of beef too much underneath. This loose layering helps the meat cook evenly in the juices.
Cover the slow cooker with the lid