Why not blind bake with two pie plates?
I use two nested pie plates all the time when I'm blind baking a crust, but glass plates don't work well. Glass plates actually have a much bigger difference between their inner and outer profiles than you might expect, so I usually use metal pie plates instead of glass because they nest a lot tighter (the thinner sheet metal stamped on a die allows for much more precise nesting).

Just be sure to dock the crust, ensure there is no gap between your pie plates and the crust itself, and remove the inner plate a couple of minutes before removing the crust from the oven to allow any excess moisture to escape and brown properly.