Press the extra-firm tofu between paper towels for 10 minutes to remove excess moisture, then cut into 1-inch cubes.
Heat a large non-stick skillet over medium-high heat and add the toasted sesame oil.
Add the tofu cubes to the skillet and sear for 3-4 minutes per side until they develop a golden-brown crust.
Stir in the minced garlic and grated fresh ginger, sautéing for about 30 seconds until the aromatics are fragrant.
Add the cooked quinoa, shelled edamame, and tamari to the pan, tossing well to ensure every grain is coated and heated through.
Sprinkle the nutritional yeast, sea salt, and black pepper over the mixture and stir to combine.
Add the baby spinach to the skillet and toss for 1 minute until the leaves are just wilted and vibrant green.
Divide the mixture into a bowl and serve immediately while hot.