2. In a large mixing bowl, cream together the softened butter and both sugars until light and fluffy.
3. Add the egg and vanilla extract, beating well after each addition.
4. Sift in the flour and salt, then mix until just combined.
**Step 2: Prepare the Filling**
1. In a small bowl, combine the grated apple with raisins or currants (if using) and chopped walnuts.
2. Mix gently to ensure all ingredients are well distributed.
**Step 3: Assemble the Cookies**
1. **Divide the dough into four equal parts.** Roll each part out on a lightly floured surface to about 1/4-inch thickness.
2. Using a triangle cookie cutter or three joined triangle cutters, cut out shapes from the rolled-out dough.
3. Place one-third of the apple mixture in the center of each triangle shape and fold over the edges to form a semi-circle.
**Step 4: Bake the Cookies**
1. **Place the cookies on a baking sheet lined with parchment paper.**
2. Bake for 12-15 minutes, or until the edges are golden brown.
3. Remove from the oven and let them cool slightly on the baking sheet before transferring to a wire rack.
**Step 5: Enjoy Your Treats!**
These apple walnut triangle cookies are perfect for sharing at any gathering or as a delightful dessert after a meal. Store any leftovers in an airtight container at room temperature for up to three days, or freeze them for longer storage.
#### Tips and Variations:
- **Use alternative fillings:** You can swap the apple mixture with other ingredients like chocolate chips or cranberries if you prefer.
- **Enhance flavor profile:** Add a pinch of cinnamon or nutmeg to the dough for an extra depth of flavor.
By following these detailed steps, you'll be able to create delicious apple walnut triangle cookies that are sure to delight your taste buds and impress your guests. Happy baking!
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