Preheat the oven to 325°F. Grease and flour a bundt cake pan.
In a large bowl, cream together the butter and sugar until light and fluffy.
Add eggs one at a time, beating well after each addition. Stir in the vanilla extract.
In a separate bowl, whisk together the flour, baking powder, and salt.
Gradually add the dry ingredients to the butter mixture, alternating with the milk, beginning and ending with the flour mixture. Mix until just combined.
Fold in the crushed Oreo cookies.
Pour the batter into the prepared bundt pan and smooth the top.
Bake for 60-70 minutes, or until a toothpick inserted into the center comes out clean.
Allow the cake to cool in the pan for 15 minutes before transferring to a wire rack to cool completely.
For the glaze: Whisk the ingredients together and drizzle over the cooled cake. Top with additional crushed Oreos if desired.