Monster cookies

1/2 cup butter
1 cup brown sugar
1 tbsp. corn syrup
2 tsp. baking soda
chocolate chips
4 1/2 cups oats
1 1/2 cups peanut butter
1 cup sugar
1 tsp. vanilla
3 eggs
M&M's

Mix all ingredients together and bake on ungreased cookie sheet for 15 mins. at 350 degrees. YUM