Prepare bulgur by placing it into a bowl and adding 1 ⅔ cups boiling water. Allow to sit for 10 minutes or until water is fully absorbed. Then press the bulgur into a colander to remove excess water. Set aside.
Prepare caramelized onions by adding olive oil to a skillet at medium heat. Once oil is heated, add the onions and season with salt and pepper. Cook, stirring until the onions are translucent and starting to brown, about 4 minutes. Set onions aside to cool.
Prepare the burger patties by mixing bulgur, caramelized onions, ground beef, cumin, cinnamon, allspice, and fresh parsley together until fully combined. Form burger mixture into 6 patties.
Cook patties on a greased grill on medium heat and cook for 5 to 7 minutes until each side is deep brown in color.
Place burger patties on a 100% whole wheat bun and add arugula and fresh tomato slices on top. Enjoy!
