Preheat the oven to 325. Line baking sheets with parchment paper
Melt the butter and chocolate in the microwave carefu)y until smooth, set aside to cool to room temperature
In a biwl whisk together flour, cocoa poder,baking soda and salt
In another bowl beat eggs, sugar, vanilla and cooled chocolate mixture until combined
Beat in flour mixture just until incirporated, don't over mix
Fold in toffee bits
Roll into golf ball size balls
Place 2 inches apart in prepated pams. Flatten top gently with the palm of ypur hand
Bake about 15 minutes until tops appear cracked. Cool 5 minutes in pan before transvpfering to rack to cool completely
