Cream together the sugar and butter in a medium bowl
Add the egg, milk, and vanilla and mix in
In another bowl, sift together the flour, baking powder, and salt
Add the flour mixture to the sugar/butter mixture and stir in
With your hands form a ball with the dough, wrap in plastic wrap, and place in the fridge for a minimum of 2 hours
After 2 hours remove from fridge and bring to room temperature
Preheat oven to 350 degrees
Spray with cooking spray an 8x8 square pan
In a large bowl put the sugar cookie dough and pour over the top the chocolate chips, butterscotch chips, chopped pistachio nuts, and cherry M&Ms
With your hands mix the chips, nuts, and candy into the dough (sometimes you might break apart the dough to mix more in)
Put the candy loaded dough into the 8x8 pan and pat flat
Any candy that is left in the bowl spread over the dough of the dough and pat in
Bake at 350 degrees for 20 minutes in the oven
Remove from the oven and let cool completely
Cut into 1.5 x 1.5 inch bars and serve
Enjoy with a cold glass of milk