Begin by combining the batter ingredients in a Nutribullet or blender and blending until smooth.
Heat up a small amount of unsalted butter in a non-stick pan on medium heat.
Ladle some of the crepe batter into the pan and swirl the contents around so that the batter is thin and spread out evenly. Let cook until the top looks dry (about 2-3 minutes), then flip gently with a large spatula and cook the other side for a few seconds.
Repeat this step until you have about 12 crepes. Layer them on top of each other on a plate while you prep the toppings/fillings.
Melt a tablespoon of butter in a small pan and toast the chopped pecans until fragrant, but not too browned. Sprinkle with cinnamon and mix. Then, transfer them to a plate to cool.
Slice an apple thinly, as well as the brie cheese.
Arrange the apple slices and brie on 1 crepe and top with some of the toasted pecans. Repeat for all the crepes until all the toppings have been used.
Garnish with mint and enjoy with a fork and knife or rolled up!