These are a favorite with the kids at our parties, from the teens down to my 7 year old great niece and 4 year old great nephew.
They are so simple to make with a stand mixer that I've been known to mix a batch before going to work in the morning. The dough can be rolled up, chilled, and sliced and baked later in the day or even the following day.
SC helped me make some today, and next time I am going to see if she can do the whole thing herself:
These are based on a recipe at AllRecipes.com. You can find the original HERE.
1 cup butter
1/2 cups sugar
2 tsp vanilla
2 cups all purpose flour
2/3 cup baking cocoa
3/4 tsp baking soda
1/4 tsp salt
1-2 cups mini M&Ms or Reeses Pieces or Chocolate Morsels
Combine butter and sugar and beat well with a hand or stand mixer until well creamed.
Add in the eggs and vanilla and continue to beat thoroughly.
Combine all the dry ingredients and add to the creamed mixture. Beat well to combine.
Mix in the M&Ms or other candy.
Drop teaspoons sized pieces onto greased or parchment covered baking sheets.
Bake at 375 for about 9 minutes. If they take longer, that's fine, but as long as they are solid enough to be lifted off the sheet with a spatula, they are ready.
Slice and Bake: Roll into a log and chill for several hours. Cut 1/4 of the log off, and divide it into 12 pieces. Place on a cookie sheet and bake as above, though all 12-15 minutes for baking.