Begin by prepping the shortbread biscuits, crushing them into fine crumbs. Melt the butter over low heat and mix into the biscuit crumbs until fully incorporated.

In a separate bowl, combine sweetened condensed milk and milk chocolate. Melt the chocolate gently to prevent burning and stir until smooth.

Pour the melted chocolate mixture into the biscuit crumb base and mix thoroughly until fully coated. Transfer into a lined baking dish.

Press the mixture firmly into the lined baking tray and smooth the top. Chill in the refrigerator for about 2-3 hours until set.

Once chilled, cut the slice into squares and sprinkle chocolate Easter eggs on top for a festive touch.