Combine the egg replacer with the warm water and whisk to smooth.
Melt the white chocolate in a double boiler on the stove.
Cream the vegan cream cheese until smooth and then add the granulated sugar. Mix on low speed until combined. Be sure to always scrape the bottom and sides of the bowl often while mixing this entire recipe to avoid lumps. Add the egg replacer slowly while mixing on low speed and then add the lemon zest and vanilla extract. Add the melted vegan white chocolate and mix smooth. Add the vegan sour cream last mix smooth.
Pour the batter into the prepared graham cracker crust.
Bake in a preheated 350°F oven for about 40-60 minutes or until it is puffed up and no longer looks like liquid batter.
Cool completely then refrigerate overnight or at least until it is cold, firm, and set. Top with blueberry compote and serve.