Make a homemade Flaky Butter Pie Crust, or use a purchased pie crust from the store. Preheat oven to 375 degrees.
Lay rolled out pie crust over a 9" pie plate. Lifting the sides of the crust, gently press the crust into the pan. Using a knife, trim the edges of the crust, then crimp the edges to make a classic ruffled edge. Using the tines of a fork, poke holes over the bottom and sides of the pie crust. This is called docking. Set aside.
In a large bowl, toss together peaches, brown sugar, cinnamon, nutmeg, ground cloves, vanilla and flour until combined.
In a small bowl, combine brown sugar, flour, and oats; using your hands, or a pastry cutter, work in butter until large clumps form,
Transfer peach filling to pie shell, then sprinkle crumble evenly over the top.
Place pie on a rimmed baking sheet and bake until juices are bubbling and topping is golden, about 1 hour. Let cool on a wire rack 1 - 3 hours before serving.