Step 1

Preheat oven to 350 degrees F. Line a baking sheet with parchment paper. Set aside.

Step 2

In a small bowl, combine 1/4 cup granulated sugar and a pinch of kosher salt. Set aside.

Step 3

In a large mixing bowl, beat butter, vegetable oil, 1 1/4 cup granulated sugar, powdered sugar, water, and eggs until combined. Slowly add in flour, baking soda, cream of tartar, and salt. Mix until blended.

Step 4

Dough may be slightly crumbly, but not sticky. Using a 2 Tbsp cookie scoop, spoon a dough ball and roll it in your hands. Then roll dough ball in sugar and salt bowl. Place on cookie sheet.

Step 5

Using a glass with a flat bottom, dip glass in sugar bowl, then press on top of cookie. Flatten cookie so that the dough spills out over the sides of the glass to create a lip (for the icing). Repeat for all dough balls.

Step 6

Bake cookies for 8-10 minutes. Remove and cool completely on wire rack.

Step 7

For the icing, beat together the butter and sour cream for 3 minutes. Add in powdered sugar and food coloring, beating until well blended. Add up to 2 Tbsp milk, if needed to create an icing that is thick, but not runny or TOO thick.

Step 8

Spread icing over cooled cookies. ENJOY.