Put the cast iron skillet over medium heat. Once hot, add oil and butter.
Dip the two slices of bread into the egg mixture. The bread should soak most of the mixture up.
Please the bread in the pan side-by-side. Cook for 90-seconds, until golden brown, and flip.
Add the bacon onto one of the slices of French toast and top it with the sharp cheddar cheese.
Once both slices are cooked, place the second slice of toast on top of the toast with the bacon and cheese to create a sandwich.
Transfer your French toast from the cast iron skillet to a plate. Garnish with berries and maple syrup.