Vegan brownie or chocolate tray bake recipe please

[Needcoffeecoffeecoffee]

I'm inviting friends round who are vegan and would like to make something for them that's sweet.
Either brownies or a chocolate tray bake kind of thing.
There are so many recipes online but does anyone have a tried and tested favourite they would be willing to share please ?

There’s a brilliant recipe for vegan millionaire’s shortbread on Jane’s Patisserie.
Healthy Living James has a good recipe for chocolate flapjacks and these are the best cupcakes I’ve made.

Oh thank you I will try them out