mimi's sleep-tight cookies

How To Make mimi's sleep-tight cookies

• 1

  Preheat oven to 400 degrees. Butter cookie sheets. This is an old recipe, I have updated, using parchment paper here.
• 2

  In large bowl, making sure there is no greasy residue to keep eggs from whipping, beat egg whites, sugar, salt, white vinegar and vanilla until egg whites are stiff.
• 3

  Gently fold in nuts and chocolate chips. Drop mixture by teaspoonsful onto prepared cookie sheets. Put cookie sheets in oven and turn oven OFF. DO NOT OPEN for at least 5 hours, or overnight.
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