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Step 1: Melt the caramels in boiling water for six minutes.
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Step 2: Drizzle the baking paper with caramel.
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Step 3: Put the cocoa biscuits into the blender cup and grind them.
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Step 4: Put the ground biscuits into a bowl and pour in milk.
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Step 5: Mix the ground biscuits with milk.
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Step 6: Shape a rectangle from the biscuits on the baking paper.
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Step 7: Whip the cream with powdered sugar in a bowl until you obtain a firm cream.
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Step 8: Spread the biscuit base with whipped cream.
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Step 9: Slice the bananas over the cream.
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Step 10: Roll into a tight log.
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Step 11: Chill for two hours.
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Step 12: Coat the roll in caramel.
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Step 13: Chill for one hour.