Mix the bananas, eggs, butter, yoghurt and sugar until combined. Sift the flour and baking powder together and fold into the mixture. Then fold in ¾ of the pecan nuts and ½ the toffees.
Spoon the mixture into the tin and level the top. Sprinkle on the remaining nuts and toffees.
Bake for 50-55 minutes until risen and feels springy. Cool in the tin, then remove and peel of the lining.
Will keep, wrapped, in an airtight container for up to 3-4 days.