Add broth, 1/2 cup of Marinara Sauce and rice. Stir. Bring to a boil. Reduce heat. Cover. Simmer until rice is tender and liquid is absorbed, 20 to 25 minutes. Stir in beans.
Preheat convection oven to 300 F.
Fill each pepper half with filling. Top each with 1/4 cup of Marinara Sauce.
Bake until internal temperature reaches 160 F, 30 to 35 minutes.