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A slice of oatmeal pie on a plate served with vanilla ice cream.
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5 from 11 votes

Oatmeal Pie Recipe

This Old Fashioned Oatmeal Pie has a rich brown sugar filling, chewy oats, and a flaky crust for an easy classic homemade dessert!
Prep Time15 minutes
Cook Time45 minutes
Cooling4 hours
Total Time5 hours
Course: Dessert
Cuisine: American
Servings: 8 pieces

Ingredients

  • 1 (9-inch) unbaked pie crust
  • 3 large eggs
  • 1 cup brown sugar
  • 2 tablespoons cornstarch
  • 1 teaspoon cinnamon
  • ¼ teaspoon salt
  • ¾ cup corn syrup
  • ¼ cup butter, melted
  • 1 teaspoon vanilla extract
  • 1 cup quick oats

Instructions

  • Preheat the oven to 350°F.
  • On a floured surface, roll out the pie crust into a circle about 12 inches in diameter.
  • Transfer the pie dough to a 9-inch glass or ceramic pie plate. Fold the edges under and crimp all the way around.
  • Lightly dust the pie dough with flour then place it in the fridge as you make the filling.
  • Whisk the eggs in a large bowl.
  • In a separate bowl stir together the brown sugar, cornstarch, cinnamon, and salt to ensure no lumps in the brown sugar.
  • Whisk the sugar mixture, corn syrup, melted butter, and vanilla extract into the eggs until combined.
  • Stir in the oats.
  • Pour the batter into the pie crust.
  • Bake the pie for 45-55 minutes or until the top is set and the middle no longer wobbles when given a nudge.
  • Remove from the oven and cool fully before serving.

Video

Notes

Recipe Tips.
  • Chill the prepared pie crust while mixing the filling to help it hold its shape during baking.
  • Mix the brown sugar thoroughly with the dry ingredients to prevent lumps in the filling.
  • Check the pie at the 45-minute mark and loosely cover the crust with foil if it's browning too quickly.
  • Let the pie cool completely before slicing so the filling has time to fully set.
Make ahead of time. Oatmeal pie can be baked ahead of time, which is great for the holidays. Cover and store in the refrigerator for up to 3 days. 
Freeze. Freeze the pie by covering tightly and placing it in a freezer-safe bag for up to 2 months.

Nutrition

Calories: 420kcal | Carbohydrates: 71g | Protein: 5g | Fat: 14g | Saturated Fat: 6g | Cholesterol: 94mg | Sodium: 268mg | Potassium: 122mg | Fiber: 2g | Sugar: 52g | Vitamin A: 292IU | Calcium: 52mg | Iron: 2mg