Par-cook the bacon. Place the bacon on a plate with paper towel to drain the bacon. Reserve the bacon grease.
While the bacon is cooking, rub both sides of the flank steak with one clove of garlic and season with salt and pepper. Cut the steak across the grain in 2-3 inch strips.
Place a piece of bacon on each strip of steak. Roll the strip and secure the end with 2 toothpicks. Coat each piece with flour.
In the same pan used to cook the bacon, brown the pieces of steak on all sides. Once they are browned, set aside on a plate and tent with aluminum foil,
Add the onions and minced garlic and saute until soft, about 5 minutes. Add the tomato sauce and parsley. Stir and heat for about 2 minutes.
Meanwhile, in a large pot like a Dutch oven, place the steak pieces and set temperature to low. Pour the tomato sauce over the steak pieces and cover tightly. Simmer for 60 minutes