Grease and flour well an 8" square pan
Get a big bowl and a heavy-duty wooden spoon ready. Must be mixed by hand. It would burn out a mixer. And be aware -- mixing this batter is good for your biceps!
- 2 cups graham cracker crumbs (32 squares, crushed*) mixed with 1 tsp. baking powder (Betsy's original recipe does not include baking powder, but most I've researched do. Don't use it if you want the intense density of the original.)
- 1 can sweetened condensed milk
- 1 cup semi-sweet chocolate chips
Cool on wire rack.
Cut when completely cooled. Cut into 1" squares. Any bigger is too much! You'll need to wipe the knife often when cutting. I use warm water and a paper towel between slices.
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