Sedimentary Rock Snacks

Sedimentary rocks are made in layers.  The layers of mud, sand, or even seashells are built up over a long period of time.  The layers get squeezed and stuck together to make new rocks.  This cookie is made in layers and you can still see the layers even after it is pressed and cooked. 

NOTE!  This activity must be done under adult supervision!

You will need to gather these ingredients:

   1/2 cup butter (melted)

   1 1/2 cups vanilla wafer crumbs

   1 (14 oz) can sweetened condensed milk

   1 (6 oz) package chocolate chips

   1 (6 oz) package peanut butter chips

   1 cup chopped nuts

Materials:  Clear 13" by 9" baking pan, can opener, heat source, oven mitts.

Steps to follow:

Melt the butter and then pour into the baking pan. Have children put in vanilla wafer crumbs using a little scope.  Pour condensed milk evenly over the crumbs.  Layer the remaining ingredients evenly over the top.  Press down gently.  Bake at 350 degrees for 25-30 minutes.  Let cool.  Cut into bars.  Enjoy!

Follow Up:

Describe how the cooked item was formed.  Notice that after being pressed a cooked, the items remained in layers.  Explain how this is a good example of how sedimentary rocks are formed.