1 tablespoon mayonnaise
pinch of sugar
pinch of garlic powder
1 tablespoon unsalted butter
1/4 cup Frank’s hot sauce
1/2 teaspoon packed brown sugar
1 teaspoon apple cider vinegar
3/4 cup cooked and shredded chicken (from about 1 small chicken breast)
2 tablespoons minced red onion
2 tablespoons minced celery
4 1/2-inch thick slices Italian bread
1 tablespoon unsalted butter, at room temperature
3/4 cup grated cheddar cheese
To make the white sauce:
Stir the yogurt, mayonnaise, sugar, garlic powder and a pinch each of salt and pepper together in a small bowl. (The sauce can be made ahead and refrigerated.)
To make the buffalo sauce:
Melt the butter in a small saucepan set over medium-low heat. Add the hot sauce, brown sugar and vinegar and stir until combined. Add the shredded chicken, red onion, and celery and toss to coat. If the chicken was cold, keep the pan over low heat and let it warm through a bit.
Lightly butter one side of two slices of the bread. Flip the slices over and lay them butter side down on your work surface. Spread half of the white sauce on the side of those two slices that is now facing up (the unbuttered side). Distribute half of the cheese among the two slices. Top each slice with half of the chicken mixture and then distribute the remaining cheese over the chicken. Lightly butter one side of the two remaining slices of bread, then flip them over and use the other half of the white sauce to coat the unbuttered side. Top each sandwich with a slice of this bread to finish it (buttered side facing out).
Heat a heavy-bottomed skillet over medium heat. Place the sandwiches butter side down in the pan and cook on the first side until the bread is golden brown and toasted. Flip the sandwiches using a spatula and continue to cook on the other side until the bread is golden brown. You can use the spatula to compress the sandwich as it cooks on the second side. Remove the sandwiches from the pan and let them rest for a minute or two, then slice in half (if desired) and serve.
Makes 2 sandwiches