Baked Beef Empanada

Name: Baked Beef Empanada
Ingredients: 2 cups all-purpose flour; ¼ tsp salt; ⅛ tsp baking powder; 1 cup cheddar cheese (grated); ¾ cup unsalted butter (cut into cubes, chilled); 7 tbsp. ice cold water (plus up to 3 tbsp extra, as needed); 2 tbsp cooking oil; 2 cloves garlic (minced); 2 tbsp onion (sliced thinly); 300 grams ground beef; 1 small potato (peeled and diced, about ½ cup); 1 small carrot (peeled and diced, about ½ cup); 2 tbsp tomato paste; ¼ cup peas; ¼ cup raisins; ½ tsp salt; ¼ tsp pepper; 2 tbsp brown sugar; 1 tbsp milk; 1 egg