Roast the walnuts in an oven preheated to 170℃ for 3-5 minutes and crush them. (You can also cook them in a toaster oven for 2 minutes, but be careful not to burn them).
Add the butter and sugar to a microwave safe bowl, heat up at 500W for 1~2 minutes, and stir.
Add cake flour to step 2, and mix with a spatula until smooth.
Add the walnuts to Step 3, and stir.
Form the dough into balls with your hands and place them on a cookie sheet. Bake for 17~20 minutes in an oven preheated to 170 °C.
The cookies are ready once the surface turns a light golden brown, and the bottoms are browned too! Cool ithem on a baking rack.
Place the cookies and powdered sugar into a plastic bag. Shake them around to coat the cookies with powdered sugar.
Done! Enjoy it with bancha tea, green tea, black tea, or coffee. Enjoy them while they're still warm!
Story Behind this Recipe
I wanted to make something not-too-sweet and crunchy just like the ones from my favorite bakery! So I made these. You just mix and bake these, so please give them a try.
Make sure not to burn the walnuts in Step 1! The cookies are also difficult to roll up if you don't break the walnuts apart enough. Make sure not to overheat the butter in step 2! The cookies will break apart if you shake the cookies too vigorously in Step 2, so please shake them gently.