Preheat the oven to 180℃/350F fan, 200℃/400F or Gas Mark 6.
Line a baking tray with baking paper (I used a 25x25cm tin).
Melt the milk and dark chocolate, butter and sugar together over a low heat.
Once they are melted remove from the heat and leave to cool for 5-10 minutes.
Beat in each egg, one by one.
Stir in the flour.
Pour approx half of the batter in to your tin.
Evenly spread the whole mini Creme Eggs over the mixture.
Top with the remaining batter and smooth out with a spatula.
Half 5 Creme Eggs and then spread them evenly over the top of the mixture. (I placed them so that each piece had a part of a Creme Egg on).
Bake for 30 minutes, or until the edges are just solid but the middle still has a little wobble. Don't overbake them!
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