In a mixing bowl with dough hook attachment, mix together flour, yeast mixture, milk, egg, vegetable oil, sugar, baking powder and salt until everything is incorporated. Take the dough onto a flat surface dusted with a bit of flour and knead for a few minutes.
1 large egg, ¼ cup vegetable oil, 2 tablespoons granulated sugar, 1 teaspoon baking powder, 1 teaspoon salt, 4 cups all-purpose flour