Cook 1 cup basmati rice according to package instructions. Optional: add ½ chicken bouillon cube to pot with rice.
Preheat oven to 350 F. Prepare peppers by cutting open lengthwise and removing all seeds, stems, and ribs.
Heat 2 tbsp olive oil in a large pot over medium-high heat. Add minced garlic and cook until fragrant, about 30 seconds. Add diced onions and sauté until golden. Now add the meat, breaking into pieces with a wooden spoon, until browned.
Season meat with salt, pepper, cumin, coriander, oregano, cinnamon, cayenne, and paprika. Mix together well. Next add the can of crushed tomatoes, chicken broth, water, and stir to combine. Bring to a simmer and cook until liquid has reduced, about 15 minutes.
Remove from heat. Add the cooked rice, ½ of the feta, fresh parsley, and mix well. Taste and adjust seasonings to your liking.
In a baking dish pour in ½ cup chicken broth (or water). Assemble the bell peppers open side up. Fill each one with the stuffing mixture.
Cover the dish with foil and bake for 35 minutes. Remove from the oven and uncover. Sprinkle with remaining feta crumbles and return to oven for 10 more minutes. Garnish with parsley and serve.