Carrot Cake Sandwich Cookies | The Fancy Pants Kitchen

Ingredients

• 1 cup unsalted butter, softened
• 1 & 1/4 cups firmly packed dark brown sugar
• 1/2 cup granulated sugar
• 2 large eggs , room temperature
• 2 tsp vanilla extract
• 2 & 3/4 cups all-purpose flour
• 1 & 1/2 tsp ground cinnamon
• 1 teaspoon (3 grams) kosher salt
• 3/4 tsp baking soda
• 1/2 tsp ground allspice
• 1/2 tsp ground ginger
• 1 & 1/2 cups old-fashioned oats
• 1 cup lightly packed grated carrot (approximately 1 large carrot)
• 1/2 cup finely chopped pecans
• 1/2 cup unsalted butter, softened
• 1/2 cup sour cream, divided
• 1/2 tsp vanilla extract
• 1/4 tsp kosher salt
• 3 cups confectioners’ sugar, divided