Add beef, onion, tomato paste and stock to slow cooker
Mix well to combine
Pour whole cherry tomatoes on top
Cook on low for 4.5hrs
Give it a good stir and tomatoes will break down into the meat
Allow to cook for another 30mins prior to serving
Notes
Alternatively replace stock powder with 2 tablespoons of bone broth concentrate (I love Meadow & Marrow Bone Broth which I purchase from their website)