INGREDIENTS
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1 c. (2 sticks) unsalted butter, softened
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1 c. light brown sugar (firmly packed)
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1 egg yolk
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1 tsp. vanilla extract
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1/4 tsp. salt
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2 c. all-purpose flour (or white whole wheat flour, which is what I use)
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1 1/2 c. semi-sweet chocolate chips
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1/2 c. chopped pecans
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3/4 c. chopped Heath Bar or Heath toffee bits