Drain the packing liquid from a pacakge of tofu. Press the tofu to remove excess liquid from the cube of tofu.
Combine sauce ingredients in a bowl.
Stir together the sauce mixture and set aside to let the flavors blend.
Place oil in a skillet over medium heat and cook until shimmering. Use tongs to place the tofu in the skillet and use a spatula to break it down into smaller pieces. Then use a potato masher to mash the tofu as it cooks.
Pour the cooked lentils into the skillet.
Add the sauce and stir, coating all of the tofu. Cook for 10 to 15 minutes until heated through.
Serve immediately with tacos, burritos, etc. Or transfer to an airtight container and store in the fridge for up to 10 days.