Let the good times roll this mardi gras season with these king cake cookies! A soft sugar cookie with cinnamon filling topped with icing and purple, green and gold sugar sprinkles. A fantastic mardi gras dessert to bring to any mardi gras parade or party!
In a large bowl, beat the butter and sugar on medium-high speed until nice and fluffy. Add egg and egg yolk and beat until incorporated.
Add sour cream and vanilla and beat on low, until well combined, scrape down the sides of the bowl to make sure everything is incorporated.
In a separate bowl, mix dry ingredients.( flour, cornstarch, baking soda, baking powder, and salt.) Slowly mix dry ingredients to the wet ingredients and mix until combined. Cover the bowl with plastic wrap and refrigerate for at least 1 hour for best results.
Bake for 9-13 minutes or until the cookies are just starting to turn golden (NOT brown) on the edges. Remove from oven and allow to cool completely on the sheet. Cookies will continue to cook while they cool. Repeat with any remaining dough.
In a small bowl, melt butter and then add sugar and ground cinnamon. Stir or whisk thoroughly until combined.
Mix together, powdered sugar, milk, vanilla and lemon juice to desired consistency. Icing should be a thick but piping consistency. Similar to cinnamon roll icing.
Preheat oven to 375 degrees F. Line baking sheet with parchment paper.
Using a baking mat or smooth clean surface, sprinkle a little flour or cornstarch on the mat.
Scoop out about 2 tbsp of cookie dough and roll it into a long snake shape. It should be about 1/2 in thick or less and about 12 inches long.
Use a brush to spread a layer of cinnamon filling on top of the cookie dough.
Fold cookie dough roll in half gently pressing it together. (Your cinnamon filling should be pressed together on the inside.)
Using your hands, twist each end of the cookie dough in the opposite directions, giving it a spiral or braided effect.
Bring both ends together to make a circle and press gently the ends together. Transfer your king cake shaped cookie to cookie sheet/baking sheet. Repeat until all cookie dough is used.
Bake for 9-12 minutes. Remove from the oven. Cookies will continue to cook while they cool.
Once cookies are cooled, add icing on top and sprinkle with colored sugar crystals.