Peanut Butter Chocolate Chip Cake

For a 12 x 8.5" tin (21 squares):

3 small over ripe bananas, mashed
100g chocolate chips
4 tbsp peanut butter
5 tbsp Greek yogurt
100g honey
75ml olive oil
125g plain flour
1 tsp baking powder
Half tsp bicarbonate of soda

1) Whisk the mashed banana with the peanut butter, yogurt, honey and oil until smooth.
2) In a large bowl, sift in the flour, baking powder and soda.
3) Gradually fold in the banana mixture into the dry mixture until almost mixed. Add in the chocolate chips, gently folding until no more flour is seen.
4) Transfer to a lined tray and bake at 180 degrees C for 20-25 minutes until brown.