Drain all excess wter from tofu by using a tofu press or by putting something heavy onto tofu wrapped in paper clothes. Wait for a few minutes.
Meanwhile, prepare sauce by whisking all the ingredients for sauce together. If you don't like your dish very spicy, add only 2-3 tbsp hot Korean sauce gochujang.
Cut tofu in cubes and marinade it in prepared sauce for 5 minutes.
Meanwhile, cook sliced mushrooms in a frying pan with a drop of olive oil. Remove them and in the same pan, add spinach and cook it for 1 or 2 minutes.
Clean the pan and add marinated tofu. Cook it untill crispy and golden.
Cook rice according to package instructions, usually about 15-20 minutes.
Assemble your bibimbap bowl: Arrange cooked mushrooms, spinach, pickled or regular cucumber, carrot, tofu, lime wedges, and spring onion in a bowl. Sprinkle with both black and white seeds.
Serve with steamed rice. Enjoy!