As you can see, I didn't use tempeh. I have tried tempeh before and I love the taste and texture but wouldn't ya know, I would be allergic to it. I'm sensitive to foods that have been fermented like tempeh. I used firm tofu but it still crumbled up a little. I served this over brown rice and doctored mine up with some sriracha hot chili sauce and Braggs. The recipe called for 1/8 tsp. red pepper flakes but that wasn't hot enough for me! Next time I might try using Gardein Homestyle Beefless Tips.