Melty Turkey Meatball Subs with Roasted Peppers

Make it

Instructions

1. 01

   Heat the oven and line the pans

   Set a rack in the center of the oven and preheat to 425°F (220°C). Line a large rimmed baking sheet and a second baking sheet with parchment paper; set the second sheet aside for the subs. Use a large enough first sheet to leave space between the meatballs and peppers. | Why: Lining the sheets before mixing and shaping prevents sticking and makes both baking stages easy to manage.

2. 02

   Slice and season the peppers

   Wash, dry, core, and seed 2 bell peppers, then cut into ½-inch strips. On one side of the lined rimmed sheet, toss the strips with 1 tbsp olive oil and spread in a single layer, leaving the other side clear for the meatballs. | Why: Dry, evenly spaced strips roast and sweeten instead of steaming.

3. 03

   Mix and shape the meatballs

   In a large bowl, combine 1 lb ground turkey, 1 egg, ⅓ cup plain breadcrumbs, ¼ cup grated Parmesan cheese, 1 tsp garlic powder, 1 tsp dried oregano, 1 tsp kosher salt, and ½ tsp ground black pepper. Mix gently just until combined. With clean hands, shape into 16 equal meatballs and place on the empty side of the already parchment-lined rimmed baking sheet, with a little space between them. Wash hands and any surfaces that touched the raw mixture. | Why: Gentle mixing keeps the meatballs tender, while spacing helps them brown.

4. 04

   Roast until browned and cooked through

   Slide the filled rimmed sheet onto the center rack of the preheated 425°F (220°C) oven. Roast for 18–22 minutes, until the strips are tender with browned edges and the meatballs are lightly browned and register 165°F (74°C) in the center on an instant-read thermometer. If one finishes first, remove it with clean utensils and continue roasting the other. | Why: A thermometer confirms the poultry is safely cooked without drying it out.

5. 05

   Warm the sauce while the sheet roasts

   While the sheet is in the oven, pour 2 cups marinara sauce into a large skillet. Set over medium-low heat and stir occasionally for 5–7 minutes, until gently steaming; reduce the heat to low to keep warm without splattering. | Why: Warm sauce coats the cooked meatballs quickly and keeps the filling hot.

6. 06

   Combine the filling

   When both roasted components are ready, remove the rimmed sheet from the oven with oven mitts, leaving the oven at 425°F (220°C). Transfer them to the warm skillet with clean utensils. Stir gently over low heat for 2 minutes, until evenly coated and hot. Turn off the heat. | Why: A short simmer brings the roasted filling and sauce together without toughening the meatballs.

7. 07

   Fill and bake the subs

   Split 4 hoagie rolls lengthwise without cutting all the way through. Place them open-side up on the second parchment-lined baking sheet. Divide the hot filling evenly among them and top each with one of 4 provolone slices. Bake on the center rack at 425°F (220°C) for 4–6 minutes, until the cheese melts and the roll edges are lightly crisp. | Why: A brief final bake melts the cheese while keeping the rolls sturdy and warm.

8. 08

   Garnish and serve

   Remove the baking sheet with oven mitts and let the subs stand for 2 minutes. Meanwhile, wash, dry, and finely chop 2 tbsp fresh parsley (measure after chopping). Scatter over the subs, close them gently, and serve warm, one per person. | Why: A brief rest makes the subs easier to handle, and the fresh garnish brightens the rich filling.