1/2 cup butter or margarine
1 1/2 cup brown sugar
1 cup peanut butter
3 lg eggs
4 cup oatmeal (uncooked)
2 tsp baking soda
2 tsp vanilla extract
1 cup M&M's (or Reese's Pieces)

Heat oven to 350°f.

Combine butter, sugar, and peanut butter in a large mixing bowl and beat until creamy.  Mix in baking soda, eggs, and vanilla extract.  Blend in oats 1 cup at a time.

Place dough balls 3" apart on ungreased baking sheets about two inches apart.

Bake at 350°f for 10-12 minutes.  Cool completely.  Store in airtight container.  Makes 2 dozen cookies.