I made these for breakfast on Mother's Day. They were a big hit. Well, except with Eddie. He is going through an anti-sauce phase and refused to touch them on account of the Nutella in the center (he ate a stale mini bagel instead). The original recipe says in makes 2 sandwiches, but the egg mixture went a bit further for me—I'd say there was probably enough for 3-4 sandwiches.
• 4-8 slices quality white bread (Harmon's challah bread worked nicely)
• 1/4 cup Nutella
• 2 eggs
• 1/4 cup milk
• 1 tbsp confectioners' sugar, plus more for dusting
• 1 tsp vanilla extract
Heat a panini press or flat griddle. Spread 2 pieces of bread with the Nutella. Top each side with another piece of bread.
Whisk together the eggs, milk, confectioners' sugar, and vanilla in a shallow bowl. Dip each side of the sandwich in the egg mixture. Transfer to a platter. Let stand for a few seconds.
Put the sandwiches on the press, pull the top down, and cook until they are golden and crisp, about 4 to 6 minutes. If you are using a flat griddle, you would just have to flip them over like regular french toast.
Dust with confectioners' sugar, then do your best not to inhale as you bite.