Natchitoches Beet Pies

Name: Natchitoches Beet Pies
Ingredients: 1/2 stick (4 tablespoons) unsalted butter; 1/2 large yellow onion, small dice; 2 green bell peppers, small dice; 4 celery stalks, small dice; 1 jalapeño, seeded and minced; Kosher salt and freshly ground black pepper; 2 medium-to-large roasted red beets, peeled and medium dice; 4 cloves garlic, minced; 2 tablespoons minced fresh ginger; 1/4 cup all-purpose flour; 1 1/2 cups all-purpose flour, plus more for dusting; 3/4 teaspoon kosher salt; 1/2 teaspoon baking powder; 1/4 cup milk; 1 large egg; 2 tablespoons beet puree (see Cook's Note); 3 tablespoons vegetable shortening; Vegetable oil, for frying