Cookies and Creme Oreo Cake

Ingredients

• 3 cups all-purpose flour
• 2½ cups granulated sugar
• 1 tbsp. + 1 tsp. baking soda
• ½ tsp. salt
• 1 cup unsweetened cocoa powder
• 1⅓ cups canola oil
• 1½ cups buttermilk
• 3 large eggs
• 1½ cups freshly brewed, extra-strong hot coffee
• 1 tsp. pure vanilla extract
• Scant ½ cup all-purpose flour
• 1½ cups milk
• 2 tsp. vanilla
• 1½ cups (3 sticks) unsalted butter, softened
• 1½ cups granulated sugar
• ~1 cup confectioners’ sugar (optional)
• 25 Oreo cookies, crushed into crumbs
• 6 whole Oreo cookies, for garnish