Creating your own Argentine Beef Empanadas can be a fun and satisfying process. Follow these simple steps:

1. Prepare the Dough: In a bowl, mix the flour, cubed butter, and a pinch of salt. Blend until it forms a crumbly mixture.
2. Add Water: Gradually add cold water, mixing until the dough comes together. Knead lightly, wrap in plastic, and refrigerate for about 30 minutes.
3. Cook the Filling: In a skillet over medium heat, sauté chopped onions and garlic until translucent. Add the ground beef, cooking until browned. Season with cumin, paprika, salt, and pepper.
4. Mix the Filling: Remove from heat and stir in chopped olives and hard-boiled eggs. Let the mixture cool.
5. Roll Out the Dough: On a floured surface, roll out the chilled dough to about 1/8-inch thick. Cut circles of about 4-5 inches in diameter.
6. Fill the Empanadas: Place a spoonful of the beef mixture in the center of each dough circle.
7. Seal the Empanadas: Fold the dough over the filling to form a half-moon shape. Press the edges together to seal, and crimp with a fork.
8. Prepare for Baking: Place the empanadas on a baking sheet lined with parchment paper. Brush the tops with beaten egg for a golden finish.
9. Bake: Preheat your oven to 400°F (200°C) and bake for 20-25 minutes or until golden brown.
10. Cool Slightly: Once removed from the oven, let the empanadas cool for about 10 minutes before serving.

With these steps, you are now ready to create these wonderful Argentine Beef Empanadas that will surely impress everyone around your table.