In the bowl of a stand mixer fitted with the dough hook attachment, combine flour, softened butter, sugar, and salt on medium speed until thoroughly blended. With the motor running, slowly add in cold water and mix until a soft and pliable dough forms, 7 to 10 minutes.

Transfer to a clean work surface lightly dusted with flour and kneaded one or two times, just enough to form a neat ball. Wrap in plastic wrap and set in the refrigerator for 4 hours up to overnight.

On an un-floured flat work surface, roll out the dough into a ⅛ inch thick sheet; let the dough rest for 10 minutes. Then, cut out the disc using a 5 to 6 inches rounds cutter or saucer; depending on how large you prefer, I use a 6'' glass lid.

Then, gather the scraps, add to the rest of the dough, and roll out another batch of circles; repeat with the rest of the scraps. Cover the discs with cling film and chill while you prepare the filling or if not used immediately, use wax or parchment paper to separate the stack and refrigerate or freeze to use later.

Place eggs in a pot of water on the stovetop with at least an inch of water covering the eggs. Simmer the eggs. Turn on the heat and bring the water to a rolling boil. Simmer the eggs in boiling water for fifteen minutes to get firm whites and egg yolks.

Using a slotted spoon, remove the eggs from the pot and place them in an ice bath in a large bowl. Cooling the eggs in cold water will halt the cooking process and make handling the eggs easier when peeling.

When the eggs are completely cool to room temperature—about fifteen minutes—gently tap the egg on the counter or table to crack the peel. Tap the top end of the egg and the bottom end before tapping the egg's sides to break up the eggshell.

Carefully peel the egg, starting from the wide bottom end of the egg to break the air pocket between the egg and the shell. Then, gently peel off the shell to avoid breaking the egg whites. Pat, dry with a paper towel, and places them into a bowl. Using a fork, mince the eggs, cover with plastic wrap, and store in the refrigerator until ready to use.

Reduce heat to low, cover, and simmer, occasionally stirring, until beef is tender for about 1 hour. Remove lid, and increase heat to high until and let dry up to a juicy but dry look for about 3 to 5 minutes.

Taste and adjust seasoning if needed. Then, working in batches, transfer the meat mixture to a food processor or blender and pulse until it is coarsely shredded; don't overdo it, or you'll need up with puree. Next, transfer each batch of shredded meat mixture into a large mixing bowl and mix in the minced eggs. Let it cool to room temperature, then cover and refrigerate until ready to use.

Line 2 large baking sheets with parchment; set aside. Once the beef has cooled, working quickly, so the dough doesn’t warm too much in your hands, portion about 2 spoonfuls in the middle of each empanada disc, leaving a 1-inch border around the edge; avoid reaching the edges with the filling because oiliness will prevent a good seal.

Moisten the tip of your finger with a small amount of water and moisten the edges of the circle with your finger around half the border; then gently fold over until the edges meet to seal into a half-moon shape.

Crimp the edges with a fork, removing any air pockets as you go. Repeat with the remaining rounds and filling. Place the empanadas in the refrigerator to chill until you are ready to fry them.

In a 2-quart pot, heat the peanut oil to 350 degrees F. Gently slip 2 to 3 empanadas at a time into the hot oil and fry until golden brown, 3 minutes per side, adjusting the heat as needed. Transfer to the paper towels to drain. Serve Hot.