Arrange your halved bell peppers in one layer in the bottom of a 9 x 11 casserole dish, cut side up and set aside.
In a medium mixing bowl, combine the diced bell pepper, roasted red pepper, artichokes, chickpeas, quinoa, grape tomatoes, parsley, diced garlic, 1 teaspoon cumin, oregano, juice of 1 lemon and ¼ cup tahini and mix well.
Spoon the mixture into the peppers in your casserole dish. Fill them up to the top.
Drizzle about half of the Red Pepper Sauce (directions below) onto the stuffed peppers.
Bake for 20 to 25 minutes until heated through.
Drizzle with the remaining Red Pepper Sauce before serving.
For the Red Pepper Sauce:
Place all ingredients into a blender and puree until smooth. You can thin with a bit of water if desired.