These brownies are very rich and fudgy. If you prefer them more of a cakey texture, just add an extra quarter teaspoon of baking powder, and bake for 5-10 more minutes. As always, the better quality ingredients you use, the better the outcome, so please go for real butter and decent quality chocolate if you can. However, cheap supermarket chocolate and baking blocks such as Stork still give a thoroughly decent brownie.

This recipe makes classic style cookies - they're flat, chewy in the middle and crispy at the edges. Try to eat at least one while the PB chips are still a bit melty. There's no need to chill this dough, but you can prepare it a couple of days ahead and keep it in the fridge until you're ready to bake. It freezes well too, so you can form it into flattened balls and bake straight from the freezer.

The first of my easy, no-bake biscuit slices. Tip: The quality of the chocolate really matters here.