Slice the tempeh into 1/2-inch cubes and steam them for 10 minutes to remove any bitterness and soften the texture.
In a small bowl, whisk together the tamari, rice vinegar, grated ginger, and minced garlic to create the savory glaze.
Heat the avocado oil in a large skillet over medium-high heat and add the steamed tempeh cubes.
Sear the tempeh for 5-7 minutes, turning occasionally, until all sides are golden brown and crisp.
Add the shelled edamame to the skillet and pour the glaze over the mixture, tossing well to coat everything evenly.
Cook for another 2-3 minutes until the sauce has thickened slightly and the edamame is heated through.
Place the fresh baby spinach in a large bowl and top with the hot tempeh and edamame mixture.
Sprinkle with the nutritional yeast, sesame seeds, sea salt, and black pepper before serving immediately.