Pre-heat your oven to 160C Fan/350F/Gas Mark 4 and grease and line a 9" square traybake tin (you can bake them in other tin sizes, see above for details)
Melt the dark chocolate and butter together in a pan on a low heat, stirring as they melt. When fully melted, remove from the heat. Let it cool for 5 minutes
In a mixing bowl, whisk together the dark brown soft sugar and the eggs for exactly 5 minutes using an electric mixer, set a timer for accuracy
Slowly pour the melted chocolate and butter into the egg and sugar mixture, whilst constantly whisking on a slow speed
Add the plain flour and mix in gently
Fold in the chopped cherries and chocolate chips, and pour the batter into the lined tin
Mix the kirsch into the cherry jam and add spoonfuls of it over the brownie batter. Use a butter knife to gently swirl it around
Bake for 30-35 minutes, or until a toothpick inserted comes out with several moist crumbs on, but is not wet
Leave it to cool completely, then chill in the fridge for at least 2 hours before cutting into squares. Ideally serve with whipped cream
Store in an airtight container in a cool place and eat within 3-4 days
Notes
Make sure your eggs are at room temperature before you start baking. The butter can be cold for this recipe, as you are going to melt it anyway. It will just take slightly longer to melt.
I used unsalted butter for this recipe.
I used dark brown soft sugar for the brownies, which I do recommend using as it makes them extra fudgey, but you can also use caster sugar.
You can used tinned cherries (NOT cherry pie filling), fresh cherries or the cherries in kirsch syrup for this recipe. Just make sure any stones are removed.
For all of the answers to more questions about brownies, check out my Chocolate Brownies guide!
Although I provide cup measurements, I highly recommend weighing your ingredients out using digital kitchen scales. It is the most accurate way to measure ingredients and will ensure the best results. Digital scales are very low cost and can be purchased for around £12 ($16.50) .
For teaspoon (tsp) and tablespoon (tbsp) measurements, please use measuring spoons and not the type of spoons you eat with. Again this will ensure accuracy and provide the best results.