1. materials: 12g whole wheat flour, 2 bananas, 15g white sugar, 4g olive oil, 1 egg, 15g raisins, 15g chopped walnuts, 3/4 tsp baking soda and 1/4 tsp salt.

2. First, peel and mash a banana.

3. Cut the other banana into pieces, put it in a bowl with sugar, olive oil, eggs and salt, and beat it with an egg beater at medium speed for one minute until it becomes muddy.

4. Join banana puree. Mix well.

5. Mix whole wheat flour and baking soda, sieve into banana puree and mix well. Add raisins and walnuts. Mix well.

6. Pour into the greased and dusted mold.

7. put it in a microwave oven and bake it for 7 minutes with medium heat. Come out when the time is up.

8. Immediately demould, cool and slice.