Rinse the rice thoroughly until the water runs clear. Add in appropriate amount of water for the type of rice you are using, stir in the Greek spice blend, and cook until tender on the stove or in a rice cooker.
When the rice is finished, preheat oven to 350º F. Cut around the top of the bell peppers and pull out the seeds. Remove any additional seed and membrane with a spoon or knife. In a food processor, blend together sun-dried tomatoes and garlic until a paste forms.
In a large bowl, mix together the cooked and seasoned rice, sun-dried tomato paste, white beans, half the feta cheese, green onions, and the olive oil. Spoon the rice into the center of the bell peppers and top with remaining cheese.
Stand the bell peppers up in an 8x8" baking dish. Bake for 25 minutes or until the skins start to shrivel and the feta cheese on top is starting to turn a golden brown. Remove from oven, cool slightly, and sprinkle with pine nuts. Serve warm.