Preheat oven to 350F. Grease ramekins and set aside.
Whisk together egg, milk, cashew butter, sugar, and salt.
Toss bread crumbs with coffee grounds. Add baking powder.
Add coffee bread crumbs to wet ingredients and absorb the custard for 5 minutes.
Pour into ramekins and bake for 25-30 minutes.
In the meantime, make glaze by whisking together cashew butter, water, and sugar. Serve while warm, and drizzle glaze over it. Serve a side of the glaze if needed!