Place the cooked condensed milk in a bowl.

Melt the butter in the microwave for 20-30 seconds or in a saucepan on the stove. Pour the butter into the bowl and beat with a mixer.

Press the walnut kernels in a blender.

Add the walnuts to the bowl.

Mix for one minute.

Place a waffle on a plate or platter and spread with the prepared cream.

Grease each waffle. The cream will be enough for all 8 waffles with this amount of ingredients.

Do not grease the top waffle. Refrigerate the cake for a few hours.