Candy Corn White Chocolate M&M Blondies

INGREDIENTS

1/2 cup

unsalted butter (1 stick), melted

large egg

1 cup

light brown sugar, packed

1 tbsp

vanilla extract

1 cup

all-purpose flour

9 9/10

-ounce bag M&Ms Candy Corn White Chocolate Candies, divided (or your favorite flavor of M&Ms; white chocolate chips may be substituted)