Whisk the eggs thoroughly in a shallow bowl until no white streaks remain. Add the orange juice, heavy cream, orange zest, and vanilla extract. Whisk until completely combined and slightly frothy.
Heat a large nonstick skillet or griddle over medium heat. This temperature ensures golden exterior without burning.
Add 1 tablespoon butter to the preheated pan and let it melt completely. Swirl to coat the bottom evenly.
Dip one slice of bread into the custard mixture, coating both sides. Soak for 3 to 5 seconds per side until moist but not completely saturated.
Place the soaked bread directly into the hot buttered pan. You should hear a gentle sizzle. Cook for 3 to 4 minutes on the first side without moving it.
Flip the toast when the bottom turns deep golden brown. Cook the second side for another 3 to 4 minutes until equally golden and slightly firm to the touch.
Transfer finished pieces to a warm plate. Add more butter between batches and wipe out any burnt bits.
Serve immediately topped with maple syrup, powdered sugar, fresh berries, or your favorite toppings.