Roll out one pie crust and line the bottom of a baking dish
Wash and slice fresh plums into 1/4"-1/2" thick slices
Gently toss in a bowl with brown sugar and coat
Align sliced plums in the baking dish
Cut top pie crust into 2" strips and create a lattice top
Bake in a hot oven of 425°F for 30-40 minutes. Start checking every 5 minutes starting at 20 minutes to ensure that your pie crust does not get too brown.