[header] How to make a dairy, sugar and egg free cake [title] Preheat the oven to 230ºc/450ºf. [step] Prepare the baking pan (either by lining, greasing or using a silicone pan that doesn't need prepping). [title] Prepare the banana mash, if not done already. [step] Peel the 2 bananas and mash them. 
Add a teaspoon or so of lemon juice to prevent the mash from going brown. [title] Pour the dark grape juice into the saucepan.