Step 1

If using white sandwich bread, tear 2 slices into pieces and pulse in a food processor fitted with the blade attachment into coarse breadcrumbs. Place the breadcrumbs in a large bowl. If using fresh breadcrumbs, place 2/3 cup in a large bowl.

Step 2

Prepare the following, adding each to the large bowl with the breadcrumbs as you complete it: Finely grate 3/4 ounce Parmesan cheese (about 1/4 cup). Finely chop 1 large shallot. Mince 3 garlic cloves. Coarsely chop 1/4 cup loosely packed fresh parsley leaves.

Step 3

Add 1/4 cup plain Greek yogurt, 1 large egg, 1 teaspoon kosher salt, 1/2 teaspoon dried oregano, and 1/4 teaspoon black pepper. Stir to combine.

Step 4

Add 1 pound ground turkey and use your hands to combine it with the breadcrumb mixture until just combined. Do not overwork, which can make the meatballs tough.

Step 5

Form the meat mixture into 16 to 18 (1 1/2-inch) meatballs (about 2 tablespoons each), wetting your hands with water as needed to keep the mixture from sticking. Place place on a baking sheet or large plate.

Step 6

Heat 2 tablespoons olive oil in a 12-inch high-sided sauté pan over medium-high heat until shimmering. Add the meatballs in a single layer and pan-fry until browned on the bottom, about 3 minutes. Use tongs to carefully flip the meatballs and brown the other side, about 3 minutes more. Return to the plate or baking sheet (the meatballs will not be cooked through).

Step 7

Pour 1/4 cup water into the pan and use a wooden spoon to scrape up the browned bits that have formed on the bottom of the pan.

Step 8

Add 1 (about 24-ounce) jar marinara sauce and bring to a simmer. Return the meatballs to the pan. Reduce the heat as needed to simmer gently until the meatballs are cooked through, 5 to 10 minutes.