Homemade vegetarian chili with both tempeh and beans means this chili recipe packs a powerful protein boost and has a satisfying texture. Since the tempeh simmers so long in this recipe, there's no need to pre-simmer it, as with most tempeh recipes. Note that because this recipe calls for soy sauce it is not gluten-free. Further, some types of tempeh are made from grains which include gluten, while other varieties are gluten-free. Swap out the soy sauce and make sure your tempeh is gluten-free if you're preparing this chili for anyone with a wheat or gluten sensitivity.