Follow these steps to create your own Blueberry Cream Cheese Bread:

1. Preheat the Oven: Start by preheating your oven to 350°F (175°C). Grease and flour a standard loaf pan.
2. Mix Dry Ingredients: In a medium bowl, whisk together the flour, baking powder, baking soda, and salt until well combined.
3. Cream Butter and Cream Cheese: In a large mixing bowl, beat the softened butter and cream cheese together until creamy and smooth.
4. Add Sugar: Gradually add the granulated sugar to the creamy mixture. Beat well until the mixture is light and fluffy.
5. Incorporate Eggs and Vanilla: Add the eggs, one at a time, ensuring each is well blended. Mix in the vanilla extract.
6. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.
7. Fold in Blueberries: Gently fold in the fresh blueberries, and if using, the lemon juice and zest for added flavor.
8. Transfer to Loaf Pan: Pour the batter into the prepared loaf pan, smoothing the top with a spatula.
9. Bake: Place the pan in the preheated oven and bake for 50-55 minutes or until a toothpick inserted into the center comes out clean.
10. Cool: Allow the bread to cool in the pan for 10-15 minutes before transferring it to a wire rack to cool completely.

These steps will guide you to create and enjoy an exceptionally delightful Blueberry Cream Cheese Bread that will surely impress anyone who tries it!