Place flour into a microwave-safe bowl, and heat in the microwave for 40 seconds. In a large bowl, mix butter with peanut butter and sugar until smooth. Add in the vanilla extract and mix until smooth.
Add in the heated flour and oats and mix until a thick dough forms. Fold in chocolate chips and M&Ms. Roll the cookie dough into balls and set onto a plate. Place chocolate chips into a microwave-safe bowl, and heat in the microwave in 30-second intervals, stirring well until is fully melted and smooth.
Coat each cookie dough into the chocolate and set onto a plate. Decorate with candy eyes and let sit until it is completely set.