Brownie Thins

Ingredients

• 1/4 lb (50 mL) unsalted butter
• 1/3 cup (75 mL) cocoa
• Salt
• 1 cup (250 mL) sugar
• 2 larges eggs
• 1/3 cup (75 mL) self-raising flour
• 1 tsp (5 mL) natural vanilla extract
• 4 tbsp (60 mL) walnut pieces