Boil first 4 ingredients for 3 minutes. Remove from heat. Add vanilla and peanut butter; mix thoroughly. Add oats; mix thoroughly again.
Working QUICKLY - sets very quick - drop by teaspoonful onto wax paper. Let stand till set.
If the cocoa is omitted, there's more peanut butter taste.
Makes about 4 dozen cookies.
Not a NESTLÉ®-tested recipe.