WEIRDO-REOS! Homemade Crème-Filled Chocolate Sandwich Cookies – Weirdo Good

Ingredients

• 3/4 cup unsalted butter, softened at room temp (170 grams)
• 1 cup granulated sugar (200 grams)
• 1 teaspoon vanilla extract
• 1/2 teaspoon salt
• 3/4 cup Black Velvet Cacao (75 grams)
• 1 large egg
• 1 and 3/4 cups all-purpose flour, and more as needed (210+ grams)
• 4 cups powdered sugar (480 grams)
• 1/2 cup butter, melted and cooled (113 grams)
• 1 tablespoon vanilla extract
• water, as needed