Grind tempeh and garbanzo beans in a food processor or chop by hand to the consistency of cooked ground beef. Set aside.
In small sauce pot, heat olive oil and add garlic, cooking over medium-low until fragrant. Add remaining dry ingredients and stir until fragrant. Add remaining wet ingredients and bring to a simmer. Set aside.
In a skillet, brown bell pepper and onion lightly. Add tempeh mixture and warm through. Add sauce to coat and cook 1 more minute until hot. Salt and pepper as needed.
Scoop onto your favorite bun and garnish if desired.