Preheat oven to 350 F. Line an 8x8 pan with parchment paper.

In a large microwave safe bowl melt the butter.

Stir sugar, eggs, vanilla, and salt in with the melted butter.

Fold in cocoa powder and flour until just combined and large lumps are gone. Try not to over-mix.

Fold in chocolate chips and heath chips, pour into 8x8 pan, bake for 40 minutes or until a knife inserted into the center comes out clean. Remove from oven and let cool completely (if you can manage to wait that long!)