Step 1: Preheat Oven

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease and flour a 10-inch bundt pan or a loaf pan.

Step 2: Prepare the Batter

1. Cream Butter and Sugar: In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy, about 3–4 minutes.
2. Add Eggs and Vanilla: Add the eggs, one at a time, mixing well after each addition. Stir in the vanilla extract.
3. Mix Dry Ingredients: In a separate bowl, whisk together the flour, baking powder, and salt.
4. Combine Ingredients: Gradually add the dry ingredients to the butter mixture, alternating with the sour cream. Mix until just combined.
5. Fold in Oreos: Gently fold in the crushed Oreo cookies and mini chocolate chips (if using) until evenly distributed.

Step 3: Bake the Cake

1. Pour Batter: Pour the batter into the prepared bundt or loaf pan, smoothing the top with a spatula.
2. Bake: Bake in the preheated oven for 60–70 minutes, or until a toothpick inserted into the center comes out clean. If using a loaf pan, check for doneness around 50–60 minutes.
3. Cool: Once baked, allow the cake to cool in the pan for about 15 minutes before transferring it to a wire rack to cool completely.

Step 4: Serve

1. Slice and Enjoy: Once cooled, slice the cake and serve. It can be enjoyed plain or with a scoop of ice cream or whipped cream for an extra treat.