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