Cook the rice according to the directions on the package. Once tender, drain if necessary then place in a bowl. Mix in the beef, garlic powder, paprika, oregano, and Worcestershire sauce until fully combined. Divide the mixture evenly into cabbage leaves, tuck and wrap the leaves around the mixture. Set aside.
Heat a saucepan or small pot on medium heat. Once hot, add the oil. Saute the onion and garlic until they start to soften. Add in the tomatoes, broth, tomato paste, and sage. Mix well. Place the cabbage rolls seam side down into the pot, cover with a lid, and bring to a low simmer.
Cook until the cabbage is tender, remove the lid, and add in the cornstarch slurry to thicken up the sauce, continue to simmer so the sauce develops rich flavor.
Warm the naan on both sides in a nonstick pan over medium heat. Then cut into wedges.
Spoon 2 to 3 tablespoons of the sauce over the cabbage rolls. Serve with naan. Garnish with feta and parsely.(Save or freeze any extra sauce for future use if desired)