Combine the non-dairy milk, cornstarch, and vanilla in a large shallow sauce pan and whisk until everything is combined and the corn starch is dissolved.
Place one slice of bread face down in the milk mixture. After a few seconds, flip the bread over so that the other side soaks in the milk mixture for a few seconds.
Quickly add some of vegan butter to the heated pan (it should start to fry). Immediately place the soaked bread on the buttered pan and cook for 2-3 minutes until golden brown (be sure not to try and move the bread while it is cooking).
Carefully pick the bread up with a wide spatula, add some more vegan butter to the pan (it should instantly fry), and flip the bread to brown the other side. Repeat with the other slice of bread.
Top with some maple syrup, sliced strawberries, and powdered sugar. Serve hot and enjoy!
Notes
The bread needs to be able to hold the liquid mixture and therefore cannot be too soft or thinly sliced (otherwise it may not hold up while cooking). For best results, use a thick slice of bread, but this recipe also tastes great with whole wheat bread.