INGREDIENTS:

Filling:
2 cups finely chopped walnuts
1 can condensed milk

Dough:
½ cup sugar
2 eggs
¼ tsp baking soda
1 T vinegar
250 gr unsalted butter
3 cup flour
1 tsp vanilla

DIRECTIONS:

Filling:
Cover can of condensed milk with water, bring it to boil and cook on low for 3 hours.
When cooked, cool with cold water. Mix milk with walnuts.

Dough:
Heat over to 375 F
Mix sugar with egg yolks
Mix egg whites until they get foamy
Mix vinegar with soda
Combine sugar, egg whites, vinegar mixtures with flour, vanilla to make dough

Fill in walnut forms with dough and make it hollow for the filling later
Bake for 15 minutes, until the edges get golden. Let it cook off and use filling to put two shells together.