Nutrition per serving may change if servings are adjusted.
¼ cup warm water (100 to 110°F/40 to 45°C)
1 teaspoon active dry yeast
½ teaspoon white sugar
2 cups all-purpose flour
¼ cup white sugar
¼ teaspoon salt
¼ cup milk, at room temperature
2 tablespoons vegetable oil
1 egg, lightly beaten
½ cup chopped apple
½ teaspoon ground cinnamon
¼ cup purchased or prepared caramel sauce
1 tablespoon hot water, or more as needed
coarse sea salt, as needed
Stir together warm water, yeast, and ½ teaspoon sugar; let stand until foamy, about 5 minutes.
Stir together flour, ¼ cup sugar, and ¼ teaspoon salt in a medium bowl. Add yeast mixture, milk, oil, and egg; stir until a soft dough comes together. Turn dough out onto a lightly floured surface and knead until smooth, 1 to 2 minutes (dough will be sticky). Pat dough into an 8-inch square.
Toss together apple and cinnamon in a small bowl, and sprinkle over ½ of the dough. Fold the side with no apples over the apples and knead until apples are dispersed, about 30 seconds. Transfer dough to a lightly greased bowl, cover, and let rise in a warm place until doubled in volume, about 1 hour.
Lightly flour a piece of parchment paper; set aside. Turn dough out onto a lightly floured surface. Cut into 8 pieces. Pat each portion of dough with floured hands into a 3- to 4-inch oval; fritters do not have to be uniformly shaped. Transfer fritters to the prepared parchment paper, cover loosely with plastic wrap, and let stand until doubled in volume, about 30 minutes.
Preheat the air fryer to 360°F (180°C). Preheat the oven to 200°F (95°C). Place a wire rack over a rimmed baking sheet.
Place 2 to 3 fritters in a single layer in the preheated air fryer basket and cook until golden brown, about 5 minutes. Remove cooked fritters to the prepared baking sheet and keep warm in the preheated oven. Repeat with remaining fritters.
Whisk together caramel sauce and 1 tablespoon hot water, adding more water if necessary, to make a smooth drizzling consistency. Drizzle hot fritters with caramel sauce and sprinkle with sea salt, allowing baking sheet to catch caramel drips and excess salt.
After the fritters have risen, use the parchment paper to help gently transfer them into the air fryer.