Preheat the oven to 350ºF and spray an 8x8-inch pan with non-stick cooking spray.
Next, place graham crackers and butter into a food processor and process everything together until the mixture turns into a crumble (about 3-4 minutes).
Pour the graham cracker crumble into the 8x8-inch pan and press it into the bottom of the pan until it is evenly spread out.
Bake the crust for 7 minutes at 350ºF and then remove from the oven.
Wash and dry the food processor and then place the cream cheese, greek yogurt, and honey into the food processor. Blend all of the ingredients together until smooth.
Scrape the sides of the bowl with a spatula and then add the egg white, vanilla, and lemon juice. Blend until smooth.
Finally, add blueberries to the food processor and blend until the blueberries are pureed and the mixture turns blue (about 1-2 minutes).
Pour the blueberry cream cheese mixture over the graham cracker crust. Spread the mixture evenly over the crust.
Place the bars in the oven and bake for 25-30 minutes.
Remove from the oven and let the cheesecake bars cool for at least 30 minutes. Then, chill in the refrigerator for at least 2 hours or overnight before slicing and serving.