Bring a pan of water to a simmer and place a mixing bowl on top. Gently melt the butter and chocolate in the bowl.
Weigh out the sugar, flour and baking powder and place in a large bowl. Add the eggs and vanilla extract and beat together.
Mix the chopped dates into the chocolate and butter mix, then add it to the flour mix. Stir well to combine, then spit evenly between your muffin cases.
Sprinkle each brownie with a little smashed honeycomb, then bake in the oven for 20 minutes. Allow to cool before tucking in.