Make the Lemon Spritz Cookie Dough

• In a large bowl, whisk together the flour, salt, baking powder, and cream of tartar. Set aside.
  
• In a hand mixer, beat melted butter, granulated sugar, and cream cheese until fluffy (2–3 minutes).
  
• Add egg yolk and vanilla extract, mixing until incorporated.
  
• Add lemon zest and lemon juice. Mix until well blended.
  
• Add the dry ingredients to the wet, mixing until a soft dough forms.
  
• Load the dough into a spritz cookie press and press onto an ungreased baking sheet.
  
• Bake at 350°F for 10–12 minutes until edges just begin to brown.
  
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