Place oil and crushed red pepper in a stovetop-safe and oven proof 2 quart casserole dish. Saute over medium heat for 1 minute. Add leek, shallot, red bell pepper and garlic. Saute for 3 minutes. Add the carrots and zucchini. Saute, stirring frequently for 5 minutes. Add the tempeh and saute for 5 more minutes. Add the sherry, tomato and tamari. Saute for an additional 5 minutes.
Cover casserole dish and bake in at 350 degrees F (175 degrees C) for 30 minutes.