Preheat the oven to 180℃ (160℃ Fan/ Gas 4/ 350℉) and line a 20cm (8 inch) square baking tin with nonstick baking paper.
Place the butter, peanut butter, honey, and sugar in a saucepan and melt them together on the hob over low heat. Stir continuously to prevent the mixture from burning.
100 g Butter, 100 g Smooth Peanut Butter, 200 g Light Brown Sugar, 5 tablespoon Honey
Remove the pan from the hob and mix in the oats, mashed bananas, and vanilla extract. Stir until combined.
1 teaspoon Vanilla Extract, 360 g Oats, 3 Ripe Bananas
Press the mixture into the prepared tin with the back of a spoon.
Bake in the oven for 20-22 minutes until lightly golden. Remove from the oven, score the top of the flapjack with a sharp knife, and leave to cool completely before cutting into bars.
Notes
Store:In an airtight container at room temperature for up to a week to keep them fresh and chewy, or in the freezer for up to 3 months.Nutrition:The nutritional information provided is approximate and is calculated using online tools. Information can vary depending on various factors, but we have endeavoured to be as accurate as possible.