In a small bowl pour the Milk (1/4 cup) over the Panko Breadcrumbs (1/2 cup) and set aside.
In a skillet, melt Butter (1 tablespoon). Saute the Bell Pepper (1/4 cup) and Onion (1/4 cup) until tender, about 5 to 7 minutes.
In a large bowl, combine the Lean Ground Beef (2 pound), pepper, onion, Egg (2), bread crumb mixture, Worcestershire Sauce (2 tablespoon), Salt (3/4 teaspoon), Ground Black Pepper (1/2 teaspoon) and Garlic Powder (1/2 teaspoon).
Using a small spoon or scoop, portion out and roll the meat mixture with your hands into 1-inch or smaller sized balls.
Place the balls evenly on the broiler pan. Bake for 15 minutes. If you do not have enough room on your pan to bake them all at once, store the meat mixture in the refrigerator while the first batch is baking.
In a crockpot, whisk together the Cranberry Sauce (14 ounce), Whole Berry Cranberry Sauce (14 ounce), Chili Sauce (12 ounce) and Sweet Chili Sauce (1 cup).
Add the meatballs warm or frozen. Cook on high for 1 hour, reduce heat to low and simmer for another hour.
Can keep on warm for several hours.