Preheat oven to 350º. Bake on foil lined cookie sheet.
Mix all ingredients together; shape into 1" balls; place on foil lined cookie sheet.
Bake in preheated 350º oven for 30 minutes; turn each meatball over after cooking 15 minutes.
Prepare sauce in a slow cooker or crock pot.
Place tomato sauce, water, horseradish, Worcestershire sauce, bouillon cubes, brown sugar and salt in crock pot; mix thoroughly.
Mix flour with a little of the sauce, then return to mixture and bring to a boil.
Add meatballs to crock pot; simmer for at least 1 hr before serving on low heat.
This can be made a day before serving.