Baked Beef Empanadas

Name: Baked Beef Empanadas
Ingredients: 1 lb ground beef; 2 cloves garlic (finely chopped); 1/2 white onion (finely chopped); 1/2 red bell pepper (finely chopped); 1/2 bunch cilantro (finely chopped); 1/2 tsp ground cumin; 1/2 tsp smoked paprika; 1 tsp dried oregano; 1/2 tsp black pepper; 1 tsp salt; 1/4 cup tomato sauce; 1 tbsp olive oil; 2 cups all purpose flour; 1/4 cup cold butter (cut into small pieces); 1 tsp baking powder; 1/2 - 1 cup cold milk; 1 egg (beaten, for applying to empanada prior to baking. )