1To make crepes:
Combine all the ingredients in a blender and blend until smooth. Refrigerate for 1 hour and blend again before using. Heat a small nonstick pan (about 8 inches)over medium heat and brush lightly with butter. Ladle or pour about 1/4 cup of the batter into it, tilting it all around to coat the bottom (the crepes should be thin but not completely see-through). Cook until the top is a nice golden color, flip carefully with a spatula, and cook until the second side is browned, 2 minututes total. Transfer to plate and repeat to use up all the batter. When all the crepes are stacked up, separate them one by one and stack them again(this is to prevent sticking). The crepes can be made ahead of time and cooled, wrapped well in plastic, and frozen for up to 1 month. Let thaw before proceeding with recipe.
2To make the caramel sauce, melt the butter in a large pan over medium heat until it begins to turn a slight brownish color and gives off a nutty aroma. Add the cajeta and milk and cook until bubbly and thickened, 3 to 5 minutes. Remove from heat, add brandy and return to heat, tilting the pan slightly to light the alcohol and burn it off (BE CAREFUL). Add the crepes, one by one, submerging them in the sauce and folding them in half and then in half again so they look like a triangles. Place 3 on each plate and top with toasted pecans.