To a piece of baking paper, add the Biscoff spread. Spread it into the shape of your baking tray. Ensure that the spread will be able to fit in whatever baking tray you are going to use once it is frozen. Freeze for a minimum of 2 hours (you could do this the night before).
When the Biscoff layer is frozen and ready to go, Pre-heat your oven to 180°C/ 356°F. Line the bottom and the sides of your baking tray with baking paper. Note, I used a small 15cm baking tray with a removable bottom for this recipe. If your baking tray is bigger, bear in mind that your brownies will be thinner than mine photographed. To combat this, you could increase the ingredient amounts.
In a saucepan, melt your butter on a low heat. Once melted, add your milk, sugar and vanilla extract and combine. Then add the chocolate. Take off the heat and continue stirring until the chocolate is completely melted.
In a large bowl, sieve the flour, cocoa powder and salt. Combine together with a spoon.
Pour the wet ingredients into the large bowl with the dry ingredients. Mix together.
Pour half of your brownie mixture into your lined baking tray. Then add the frozen layer of Biscoff spread. Then add the remaining brownie batter.
Bake your brownies for 25 minutes.
Once the time is up, remove the brownies from the oven. They should have developed a crackly top but will still be lovely and gooey in the middle. Leave the brownies to completely cool.
Cut them up and devour! I hope you love them.