Pre-heat your oven to 170ºC/338ºF and line up loaf cake ban with baking paper.
Add eggs and sugar into a mixing bowl and whisk together for few minutes, add mashed bananas, oil, biscoff spread and whisk until fully incorporated. Add flour, baking powder and fold in with spatula. Once everything incorporated, fold in crushed biscuits. Pour batter into prepared baking tin and bake for 40-50 minutes. Do cocktail pick test, to make sure your loaf is baked.
Let it cool in the tin slightly before removing and cooling completely on cooling rack.