halloween sugar cookie bars

Ingredients For halloween sugar cookie bars

• Cookie Bar

  ingredients
• 1 cup

  butter, softened
• 3/4 cup

  vegetable oil
• 1 cup

  granulated sugar
• 1 cup

  powdered sugar
• 2 Tbsp

  of milk
• 2 large

  eggs
• 1/2 tsp

  baking powder
• 1/2 tsp

  cream of tartar
• 1/2 tsp

  kosher salt
• 4 cup

  all purpose flour
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• Frosting

  ingredients
• 5 Tbsp

  butter, softened
• 1/2 cup

  sour cream
• 1 tsp

  vanilla extract
• 4 cups

  powdered sugar
• 4 to 5 Tbsp

  of milk
• 3 to 4

  drops of red and yellow food coloring
• halloween sprinkles