Whisk the almond flour, buckwheat flour, eggs, and butter together in a medium bowl.
Slowly whisk in milk and vanilla extract.
Whisk vigorously until well-combined (about a minute). You can also use a blender for this step—blend for about 10 seconds. The goal is to have the batter well-incorporated with no chunks of flour. The batter will be thinner than pancake batter—though not as thin as a traditional crêpe batter.
Let the batter rest for 30 minutes.
After resting the batter, give it another quick whisking.
Heat a 9- or 10-inch crêpe pan or nonstick skillet on medium-high heat, cut off a sliver of butter, and swirl it around your pan. Use a paper towel to coat the pan evenly.
Pour about ¼ cup of batter directly in the center of the pan, then quickly lift the pan up and roll your wrist around as you hold it, so that the batter spreads out into a circle. These crêpes are quite delicate—smaller crêpes are easier to flip without tearing them.
Cook without disturbing the crêpe until it looses that raw batter appearance on top.
Use a non-scratch spatula to peel up the edges to gently see whether the crêpe is cooked enough to flip.
If it is, then flip and cook the other side.
Repeat with the rest of your crêpes, including whisking the batter first and lightly buttering the pan between each one.
As you finish your crêpes, stack them on a plate separated by squares of wax paper or parchment paper.
To serve the crêpes, roll up gently, then garnish with fresh berries and sprinkle with powdered sugar.
Notes
Expert Tips: Keep an eye on the heat of your pan—if it is too hot, it will quickly brown the entire crêpe, and if it is not hot enough, the batter will spread out too thinly, and the crêpe will be too delicate to flip. Gluten-free crêpes are particularly delicate, so you may need a little patience when trying this for the first time!Make-Ahead Instructions: These crêpes can be stored for several days in the refrigerator in a ziplock bag or airtight container. And, you can freeze crêpes for up to 3 months. Use a piece of parchment or wax paper between each crepe so that they don’t stick together, then put in a ziplock bag or airtight container. If you freeze them, thaw in the refrigerator before using. When you’re ready to eat one, heat it gently in the microwave for 15-30 seconds before filling.