Add the browned beef to the crockpot along with the onion, garlic, diced tomatoes, beef broth, ketchup, Dijon, paprika, chili powder, black pepper, and ¼ teaspoon sea salt. Stir to combine.
1 onion, 3 garlic cloves, 14.5 oz diced tomatoes, 2 cups beef broth, 2 Tbsp ketchup, 1 Tbsp Dijon mustard, 1 tsp paprika, ½ tsp chili powder, ¼ tsp black pepper, ¼ tsp sea salt