Preheat oven to 375 degrees F.
In a large bowl, combine sliced peaches and 1/2 cup sugar. Mix well.
Pour peach/sugar mixture into 8 x 8 baking pan that has been prepared with non-stick spray.
In a separate bowl, whisk together flour, baking powder, sugar, and salt.
Cut butter into thin slices. Combine butter and flour mixture with a pastry cutter or your clean hands.
Slowly add cream until dough holds together and is manageable.
Put out onto floured surface. Knead a few times until dough holds together.
Roll the dough out, making sure to turn it often so it doesn't stick.
Carefully lift the dough and cover the peach-filled baking pan. Tuck under any dough that is hanging over the sides.
Score the dough in 4 places with a sharp knife.
Place baking pan on a cookie sheet. (Just in case it bubbles over.)
Bake 35 minutes. Serve warm with ice cream or whipped cream.