Sift together flour, oats, and baking soda.

In a large bowl, mix together butter, sugar, and brown sugar until creamy.

Add milk, vanilla, and egg to creamed mixture.

Slowly mix in dry ingredients until fully incorporated.

Fold in chocolate chips and 1/2 c. M&M'S®.

Drop tablespoon sized balls of dough onto lined cookie sheet. Flatten cookies with the back of your spoon. Top with 4-5 red and green M&M'S®.