These classic trubochki are composed of a wafer cookie and a luscious dulce de leche cream. I'm totally obsessed with them, and I know you will be too!
To make the batter, cream together the butter and sugar in a large bowl. Add the eggs one at a time, and mix until they are well combined.
Mix in the flour just until it is incorporated. Set the batter aside and preheat the pizzelle maker.
Place about 1 1/2 tablespoons of batter in the center of each pizzelle mold. Close the lid and cook for about two minutes, or until the pizzelle are lightly golden.
Carefully remove one pizzelle with a butter knife. Place it on a clean work surface and immediately roll it up around a clean marker wrapped in foil. Gently press down on the seam, and keep it seam side down while it cools. Repeat with the other pizzelle.
Continue this process until all the batter has been used up. While the next batch cooks, gently push the marker out of the cooled trubochki so they are ready for the next round.
To make the filling, beat the butter until it is fluffy. Add the dulce de leche and mix until well combined.
Add the filling to a pastry bag. Insert the piping tip into one opening of the trubochki and squeeze the filling inside until it reaches at least halfway. Then, fill the other side the same way. Serve immediately and enjoy!