In a small bowl soak the bread in water then squeeze out the excess water.
In a medium bowl, mix the ground beef, egg yolk, half the cheese, bread, salt, and pepper.
Form ½-inch balls and bake in the oven until thoroughly cooked and slightly brown, approximately 12 minutes.
Meanwhile, in a skillet sauté garlic with olive oil for one minute, add bell peppers and 1 cup of water, season with salt and black pepper and cover with a lid, cook slowly for about twenty minutes over medium heat.
Cook pasta according to package directions, drain and toss with pepper mixture and meatballs.
