Heat oven to 350. Spray a 8 or 9" square baking pan w/ cooking spray. In bowl, beat soft butter until creamy, slowly add in 3/4 cup sugar, mix well.
Beat in egg and vanilla. In separate bowl, combine 1-1/4 cups flour and baking powder. Beat into butter mix, alternating w/ milk. Pour into baking dish.
Place strawberry halves on top of batter, cut side down. In another bowl, combine remaining butter, sugar and flour until crumbly. Sprinkle over berries. Bake 1 hr. Serve w/ ice cream or whipped cream.