Preheat oven to 400°F
Depending on your preference, spray a glass baking pan with nonstick spray. We used an 8'x8' pan for a very moist French toast (my personal preference) and a 9'x13' pan for crispier French toast (Alex's preference).
Combine soy milk and olive oil to make a heavy cream
In a medium bowl, whisk together the heavy cream mixture, vanilla yogurt, and eggnog
Add the bread to your prepared pan and pour over the cream, yogurt, and eggnog mixture. Stir well so that all of the bread is covered by the mixture and none is left dry.
In a separate bowl, stir together the remaining ingredients to make your streusel. Sprinkle this topping over the bread mixture.
Bake at 400°F for 45 minutes.