Pre-heat the oven to 160°C / 140°C fan assisted / gas mark 3 / 320°F.
Cut the gluten-free bread into thick slices, a 400g loaf will produce about 8-10 slices. Place on a large lined baking sheet then bake in the oven for 5 minutes.
Turn off the oven when you remove the bread.
Meanwhile start heating up a heavy bottomed frying pan. A cast iron skillet is perfect if you have one but use what you have. Heat to a low-medium heat.
Make the custard by whisking together the milk, eggs, gluten-free flour, maple syrup, vanilla and cinnamon in a large mixing bowl. Allow to rest whilst you are waiting for the bread to finish in the oven.
Dip the dried bread into the custard using tongs. Store-bought gluten-free bread absorbs very easily so you don’t want to soak the bread longer than 10 seconds each side.
Once you’ve soaked each slice of bread then place on a wire rack whilst you finish soaking the rest.
Melt 1 teaspoon butter in the heated pan.
Once melted add the bread, cook for 2-3 minutes on each side until golden. You’ll probably manage cooking 2 slices of bread at a time depending on the size of your pan.
Place the cooked French Toast back onto the original lined baking sheet and place in the oven to keep warm. The oven should still be warm from drying the bread at the beginning of the recipe.
Add another teaspoon of butter to the pan and cook another two slices of French toast.
Repeat until all the French Toast has been cooked.
Serve the French Toast warm with your favourite toppings.