from smitten kitchen
Serves 4, or more as appetizers or sliders
3 slices Italian bread, torn into small bits (1 cup)
1/3 cup milk
3 ounces sliced pancetta, finely chopped (you can swap in Canadian Bacon if you can’t find pancetta)
1 small onion, finely chopped
1 small garlic clove, minced
2 tablespoons extra-virgin olive oil, divided
1 large egg
1 pound ground chicken
1 tiny can tomato paste, divided*
3 tablespoons finely chopped flat-leaf parsley
(i also added some dried oregano and onion powder)
Preheat oven to 400°F with a rack in the upper third of the oven. Soak bread in milk in a small bowl until softened, about four minutes.
Cook pancetta, onion, and garlic in one tablespoon oil with 1/2 teaspoon each of salt and pepper in a large skillet over medium heat until onion is softened, about 6 minutes. Cool slightly.
Squeeze bread to remove excess milk, then discard milk. Lightly beat egg in a large bowl, then combine with chicken, 1/2 (tiny) can tomato paste, pancetta mixture, bread, and parsley. Form 12 meatballs and arrange in another 4-sided sheet pan. (<–i made more like 18)
Stir together remaining tomato paste and oil and brush over meatballs (the paste/oil does not mix in any cohesive manner, but just smoosh it on and run with it) , then bake in upper third of oven until meatballs are just cooked through, 15 to 20 minutes (though mine took a good 5 minutes longer).