Preheat the oven to 170℃ fan bake
Prepare your baking tin (use baking paper, parchment paper, a silicon reusable liner or butter and flour - you choose your preference)
Melt the butter in a large pot over a low heat.
Take off the heat and whisk in the sugar and vanilla.
Add the eggs one at a time. Combing well using your dough whisk or wooden spoon, after each one.
Sift in the flour, baking powder, salt and cocoa. Fold gently through the mixture before adding the chocolate.
Pour into your prepared tin and use a wooden spoon to move the mixture to all the corners.
Lastly poke the frozen raspberries into the brownie one at a time. Making sure that each piece will have an even ratio of brownie chocolate and berry.
Cook for 30-35 minutes until the colour is no longer glossy and is form to touch.