Easy Mint Chocolate Chip Fudge

Perfect for the holidays or any day treat.  This is super easy to put together and so, so delicious!  We really love this one.  Enjoy!
-3 1/4 cups white chocolate chips
-2 Tbs unsalted butter
-1 (14 oz) can sweetened condensed milk
-1 Tbs mint extract
-a few drops green food coloring
-3/4 cup mini semi sweet chocolate chips, divided
Line and 8x8 square pan with foil and coat with cooking spray.  Set aside.
Place white chocolate chips and butter into large bowl.  Microwave on high for 1 minute.  Stir and microwave for 30 more seconds.  Remove bowl from microwave and stir until smooth. Add the milk and mint extract.  Give it another good stir. Add a couple drops of food coloring and stir.  Adjust to desired color.
Let the mixture cool for 5 minutes.  After that add to it 1/2 cup of the mini chocolate chips.
Pour mixture into prepared pan and press it down.  Sprinkle on top with remaining chips, gently pressing them into the fudge.
Place fudge in the fridge for at least 2 hours or until set.  Cut into squares and enjoy!