Combine the onion soup mix and paprika in a lidded bowl or resealable bag. Divide the meat, place in the bag and shake to combine. Spray the slow cooker and place the meat in the bottom. Add the left over onion soup mix. Cover with the carrots, onions and potatoes. Mix the soup and ketchup together and pour over the meat and vegetables. Cover and cook on low for 8 hours or until the vegetables are soft. Optional- steam or microwave some brussel sprouts and mix into the stew for the last 1/2 to 1 hour.