Preheat oven to 350°F and line a baking sheet with parchment paper.
In a large bowl, combine the ground chuck, breadcrumbs, eggs, chili sauce, Worcestershire sauce, onion, and salt. Mix until all ingredients are incorporated but do not overwork the mixture or the meatballs will be tough.
2 pounds ground chuck, 1 cup breadcrumbs, 2 large eggs, 2 tablespoons sweet chili sauce, 2 tablespoons Worcestershire sauce, 2 tablespoons minced onion, ½ teaspoon kosher salt
Form into 1½-inch meatballs and place on the prepared baking sheet. Leave at least 1-inch space between meatballs.
Cook at 350°F for 10 minutes, then turn each meatball over. Cook another 10-15 minutes, or until meatballs are cooked through. Remove from oven.
While the meatballs cook, prepare the sauce: In a large skillet set over low heat, combine all of the sauce ingredients. Stir until well blended then remove from heat until the meatballs are ready.
10 ounces hot pepper jelly, 12 ounces chili sauce, 8 ounces jellied cranberry sauce, 2 tablespoons dark brown sugar, 1 tablespoon lemon juice
When the meatballs are cooked, place them in the sauce in the skillet and simmer for 1 hour, or until the sauce has thickened.