Preheat oven to 425 degrees F and grease a skillet with solid vegetable shortening or butter.
In a medium-sized bowl, add flour and strawberries. Toss until well-coated with flour. Using the large holes of a cheese grater, grate frozen butter into the flour mixture. Using your hands or a pastry cutter, combine butter with flour and strawberry mixture until the dough is coarse and crumbly.
Stir in buttermilk to make a wet, sticky dough.
Turn dough out on a well-floured surface. Gently knead dough until it is no longer sticky and holds its shape. Press into a 1-inch thick rectangle and cut dough into 12 square or rectangular biscuits.
Place the biscuits on the skillet, leaving some room between them to rise and cook.
Brush the top of each biscuit with melted butter and bake 15 minutes or until top is golden brown. Serve immediately.