In a large mixing bowl, stir eggs, milk, vanilla, almond milk, and cake mix until smooth.
Heat butter in a large skillet over medium heat.
Dunk bread into egg mixture on both sites until fully coated.
Once skillet is hot, add one slice of french toast at a time. Cook for 2-3 minutes on each side, or until golden brown.
For the Glaze
In a medium bowl, melt butter in the microwave for 30-60 seconds. Stir in vanilla, and powdered sugar. Add milk until you reach your desired consistency.