1Preheat oven to 350°F. Line cupcake tins with liners.
2With electric mixer on medium speed, cream together butter and sugar until fluffy, 3 to 5 minutes. Add eggs, one at a time; beat well after each addition.
3In separate bowl, combine flour, baking powder and salt. Add dry ingredients to creamed mixture alternately with milk. Mix for 3 minutes. With spatula, fold in vanilla and strawberries. Fill cupcake liners 1/2 to 3/4 full.
4Bake 20 to 25 minutes or until toothpick inserted in center of a cupcake comes out clean. Cool in pan.