This combination of apples and onions works surprisingly well together!

Heat oil in a large frying pan over medium-high heat. Add onions and salt. Cook, stirring occasionally, until onions are soft, about 5 Minutes. Add apples and stir to coat. Reduce heat to medium and cook, stirring often, until onions are medium brown, about 30 Minutes. Add more pepper and salt to taste. Set aside to cool for 10 Minutes.
Preheat oven to 375°. Line 2 baking sheets with parchment or silicone liners. Cut each of the 16 squares diagonally to make 32 triangles. Arrange them on the lined pans
Place a spoonful of cooled onion-apple mixture on each triangle. Bake until puffed and golden, 15 to 20 Minutes. Serve hot or warm.
