Sear the beef:
Season the beef with salt and pepper. In a skillet over medium-high heat, warm the olive oil and sear the beef in batches until browned. Move the meat to the crockpot.Layer vegetables:
Place the diced potatoes, sliced carrots, and diced onion on top of the beef in the slow cooker.Mix tomato sauce:
In a separate bowl, mix together the diced tomatoes, tomato paste, oregano, paprika, and minced garlic. Pour this mixture over the beef and vegetables.Add beef broth:
Add the beef broth to the crockpot, making sure all ingredients are fully covered.Slow cook:
Put the lid on and cook on low heat for 7 to 8 hours.Season and serve:
Give it a stir, taste and adjust salt and pepper as needed. Serve hot alongside rice or bread.