Monster Bars

This is my mom's recipe, and they are *so* addicting.  I generally eat them for breakfast, afternoon snack, and dessert. You can easily make monster cookies out of this dough, but let's face it: the bars are way easier.

1 stick margarine
1 cup brown sugar
1 cup sugar
1-1/2 cups peanut butter
3 eggs
1 tsp vanilla
2 tsp baking soda
4-1/2 cups oatmeal
1 cup chocolate chips
1/2 cup M&Ms (or any chopped candy: I use candy cane Hershey Kisses, crushed candy bars...whatever you have on hand will work well)

Mix all ingredients in order.  Press in pan (I use an 11x18" pan, so the bars should be thin).  Bake at 350* for 15 minutes.