Heat oven to 350 F. Grease and line a 8 inch or 9 inch baking pan with parchment paper.
Melt butter in a medium sized microwave safe bowl, and stir in the sugar till melted. Whisk in the egg, vanilla extract, peppermint extract and salt till smooth. Now add the flour and mix well. Fold in the chocolate chips
Pour into the lined pan and bake for 20-22 minutes till done.
Sprinkle the mini chocolate chips and using a spatula spread it out evenly once it starts melting.
Throw in the pepperminty stuff while the chocolate is still warm. Let it cool down completely before cutting into squares.