Marinate tempeh for sandwiches, bowls and stir-fries. Put some fiber-rich plants into your daily dietary routine with this protein-packed functional food. Take either tempeh or tofu and marinate it in your favorite homemade sauce overnight. Once ready to use, just bake the tempeh in the oven with the sauce. Use it on sandwiches, atop grain bowls, paired with steamed veggies and roasted potatoes, or in stir-fries.