Preheat oven at 180°c

Grease 2 standard size donuts pan and set aside

In a medium bowl, Combine flour, sugar, cocoa powder, baking soda and salt

Add egg, buttermilk, oil and vanilla essence

Whisk until combined and the batter should be thin

Spoon batter into donut pan, filling 3/4

Bake for about 8-10minutes. Now touch the donut and it should spring back

Allow to cool for 10minutes by keeping aside

Now take a heavy saucepan add butter and bring it to heat to melt the butter

Now add cocolate chip and corn syrup. Stir continuously until melted and well mixed

Once glaze is ready, dip the tops of donuts into the glaze

Set aside on a wire cooling rack