Frosted Lemon Sugar Cookies

1 . Stage

Preheat the oven to 350 degrees F (175 degrees C).

2 . Stage

Beat butter in a bowl with an electric mixer until creamy. Add 1 cup sugar, vegetables oil, lemon juice, and vanilla extract; mix to combine. Add egg and mix until thoroughly incorporated.

3 . Stage

Sift together flour, cream of tartar, baking soda, and salt in a bowl. Add flour mixture to the butter mixture; mix until well combined.

4 . Stage

Pour 1/4 cup sugar into a small bowl. Form dough into 1-inch balls. Roll each ball into sugar to coat and place on an ungreased baking sheet.

5 . Stage

Bake in the preheated oven until lightly browned, about 10 minutes. Remove from oven, transfer to a wire rack and cool completely, about 30 minutes.

6 . Stage

Mix together powdered sugar and lemon juice for the frosting in a small bowl until smooth. Pour frosting over cookies and allow to harden for at least 5 minutes before serving.