Heat oven to 350°F/177℃.
Line muffin tins with paper baking cups, or spray with baking spray. Set aside.
In a small bowl, whisk together flour, baking powder, and salt. Set aside.
Beat sugar and shortening together with an electric mixer until light and fluffy, about 2-3 minutes.
Add eggs, one at a time, with the vanilla, beating well after each addition.
Add flour mixture alternately with milk, beginning and ending with flour mixture.
Stir in sprinkles.
Use a large cookie scoop to portion batter into prepared pans, filling each cup about ¾ full.
Bake for 20 minutes, or until done.