The Secret Recipes of Summer Key: GLF Banana Chocolate Chip Muffins | Digital Art by Summer Key. I'm very passionate about cooking and typically don't share my "Secret Recipes". But I couldn't find a better inspiration to create a Great British Bake Off style piece - my GLF Banana Chocolate Chip Muffins. Let me know if you whip up a batch for yourself. I Sharontee you will fall in love!