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Heat oven to 350 F and line cookie sheets with parchment paper or lightly grease.
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Beat butter, sugars, vanilla, eggs, and salt in large bowl until blended.
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In a separate bowl stir together flour, baking soda, and cream of tartar. Gradually add to butter mixture, beating until blended.
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Stir in toffee bits and caramel bits.
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Drop by heaping tablespoons onto prepared cookie sheet.
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Bake 8-12 minutes or until lightly browned.
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Cool slightly then remove to wire rack
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Cool completely