Shred the cabbage.
Dice the tofu and drain any excess moisture.
Pour water over the oatmeal and microwave for 2 minutes.
Heat olive oil in a pan and stir-fry the cabbage.
When the cabbage softens, add the tofu and tuna, and stir-fry together.
Season with soy sauce and pepper.
Place the stir-fried mixture over the cooked oatmeal to finish.