Savory Roast Beef and Gouda Rolls Posh Snack Attack

Instructions:

1. Combine flour and salt for pastry.
2. Cut in cold butter until mixture resembles coarse crumbs for pastry.
3. Gradually add ice water, mixing until dough just comes together for pastry.
4. Form into a disc, wrap in plastic wrap, and chill for at least 1 hour for pastry.
5. Heat olive oil in a skillet over medium heat to prepare filling.
6. Sauté onion until softened, about 5 minutes to prepare filling.
7. Add garlic and cook until fragrant, about 1 minute to prepare filling.
8. Remove from heat and let cool slightly to prepare filling.
9. In a large bowl, combine roast beef, Gouda, sautéed onion mixture, horseradish mustard, Worcestershire sauce, salt, and pepper. Mix well to prepare filling.
10. Preheat oven to 400°F (200°C). Line baking sheet with parchment paper to assemble the rolls.
11. On a lightly floured surface, roll out the pastry into a large rectangle, about 12x16 inches (30x40cm) to assemble the rolls.
12. Spread the roast beef and Gouda filling evenly over the pastry, leaving a ½-inch (1cm) border along one long edge to assemble the rolls.
13. Starting from the opposite long edge, tightly roll up the pastry into a log to assemble the rolls.
14. Brush the exposed border with egg wash to seal to assemble the rolls.
15. Cut the log into 12 equal slices (rolls) to assemble the rolls.
16. Place the rolls, seam-side down, on the prepared baking sheet to assemble the rolls.
17. Brush the tops of the rolls with egg wash to assemble the rolls.
18. Bake for 25-30 minutes, or until golden brown and the filling is bubbly.
19. Let cool slightly on the baking sheet before serving.