Braised Beef Empanadas

Name: Braised Beef Empanadas
Ingredients: 5 lbs. beef eye of round; Salt and pepper; 2 tsp paprika; 2 tsp oregano; 2 tbsp olive oil; 1 onion diced; 1 orange bell pepper diced; 1 red bell pepper diced; 1 green bell pepper diced; 1 small red onion diced; 4 cloves garlic diced; 1 sprig fresh thyme; 1/2 cup dry red wine; 1 1/2 cups low-sodium beef broth; 3 c. all-purpose flour (plus more for surface); 1 tsp. kosher salt; 1 tsp. baking powder; 1/2 c. cold butter (cut into cubes); 3/4 c. water; 1 large egg