Step-by-Step Instructions
Preheat the Oven
Set your oven to 425°F (220°C) to start. This high heat helps the crust bake beautifully.
Prepare the Filling
In a large bowl, mix the rhubarb, sugar, flour, cinnamon, salt, and vanilla. Stir until the rhubarb is evenly coated.
Prepare the Pie Crust
Place the bottom crust in a 9-inch pie pan. Press gently into the edges and trim any extra dough.
Add the Filling
Pour the rhubarb mixture into the prepared crust. Spread evenly.
Add Butter
Dot the filling with small butter pieces to enrich the pie while baking.
Top Crust
Cover with the top crust. Seal the edges by crimping, and cut slits for steam to escape.
Egg Wash (Optional)
Mix egg and milk, brush over the top crust for golden color.
Bake the Pie
Place in the oven at 425°F (220°C) for 15 minutes, then reduce to 350°F (175°C) for 30–35 minutes. Bake until the crust is golden and filling is bubbly.
Cool Before Serving
Let the pie cool for 2–3 hours so the filling sets properly.