How to Make It
In a blender, combine the spelt flour, all-purpose flour, salt, milk, water, eggs, and 1 tablespoon of the coconut oil. Pulse for 10 seconds until smooth. Cover and place the crêpe batter in the refrigerator to let rest for 20 minutes.
Heat a 10-inch nonstick pan and lightly brush it with some of the remaining butter. For each crêpe, add 1/4 cup of the batter to the pan and quickly swirl to spread evenly. Cook over moderate heat until the underside is speckled and lightly golden, about 30 seconds to 1 minute. Flip the crêpe and cook for 30 seconds to 1 minute longer. Repeat with the remaining batter to make 8 crêpes, brushing the pan with butter as needed.
Place the chopped chocolate and peanut butter in a small heatproof bowl set over a small saucepot of simmering water. Melt the chocolate and peanut butter together over low heat, stirring, until melted and smooth, about 4 minutes.
Fold the crêpes into quarters and transfer to plates or a large serving platter. Lightly drizzle the warm ganache over the crêpes, top with crushed peanuts, and serve right away.
If spelt flour is not readily available, replace it with an equal amount of all-purpose flour.