Butter a roasting pan. Mix beef, pork, onions, green peppers, garlic, eggs, cream and bread crumbs together in large mixing bowl. Season mixture with salt and pepper. Shape into a loaf and place on prepared pan. Pour broth over top and place in oven and bake for 1 to 1 1/2 hours, basting occasionally.
Remove pan from oven. Using long spatula, remove meat loaf from the pan. Place roasting pan on stove over high heat. In a small bowl, whisk flour with 2 tablespoons water. Whisk slurry into gravy. Bring liquid to boil and cook for a few minutes, stirring constantly. Season gravy with salt and pepper.
Slice meatloaf into 8 slices. Serve 2 slices per person with gravy.