INGREDIENTS
1/2 cup
unsalted butter (1 stick), melted
1
large egg
1 cup
light brown sugar, packed
1 tbsp
vanilla extract
1 cup
all-purpose flour
1/2 tsp
salt, or to taste
18
Oreo cookies, roughly chopped
1/2 cup
M&M’s (I used Dark Chocolate Red and Green M&M’s)