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Old-Fashioned Frozen Peach Crisp: A Classic Dessert Made with Simple Ingredients

Few desserts capture the warmth and comfort of homemade baking quite like an old-fashioned peach crisp. With its golden, buttery oat topping and sweet, juicy fruit filling, this classic dessert has been a favorite at family gatherings, Sunday dinners, and summer celebrations for generations. While traditional peach crisp is often made with fresh peaches picked at the height of summer, using frozen peaches allows you to enjoy this nostalgic treat all year long without sacrificing flavor.

Frozen peaches are a convenient choice because they are usually harvested when ripe and preserved at their peak sweetness. When combined with a lightly spiced peach filling and a crunchy oat topping, they create a dessert that tastes as if it came straight from a country kitchen.

This recipe focuses on the traditional method of making a peach crisp: preparing a flavorful fruit base, creating a rich crumb topping, and baking everything until the peaches are bubbling and the topping becomes beautifully golden.

Ingredients

For the Peach Filling:

6 cups frozen sliced peaches, slightly thawed
½ cup granulated sugar
2 tablespoons brown sugar
3 tablespoons all-purpose flour or cornstarch
1 tablespoon lemon juice
1 teaspoon vanilla extract
1 teaspoon ground cinnamon
¼ teaspoon ground nutmeg
A small pinch of salt

For the Crisp Topping:

1 cup old-fashioned rolled oats
¾ cup all-purpose flour
¾ cup brown sugar, packed
½ teaspoon cinnamon
¼ teaspoon salt
½ cup cold unsalted butter, cut into small cubes
½ cup chopped pecans or walnuts (optional)

Step 1: Prepare the Frozen Peaches

Begin by allowing the frozen peaches to thaw slightly. They do not need to be completely soft; partially thawed peaches are easier to mix while still maintaining their texture during baking.

Place the peaches in a large mixing bowl. If there is excess liquid from thawing, drain some of it to prevent the crisp from becoming watery. However, keep some moisture because it helps create the delicious syrup-like filling that makes peach crisp so comforting.

Step 2: Create the Peach Filling

Add the sugar, brown sugar, flour or cornstarch, lemon juice, vanilla extract, cinnamon, nutmeg, and salt to the peaches.

Gently stir everything together until the peaches are evenly coated. The flour or cornstarch will combine with the peach juices during baking, creating a thick, sweet sauce that surrounds each slice of fruit.

Allow the mixture to rest for about 10 minutes. This gives the flavors time to blend together and allows the peaches to release some of their natural juices.

Step 3: Make the Crisp Topping

In a separate bowl, combine the rolled oats, flour, brown sugar, cinnamon, and salt.

Add the cold butter cubes and use your fingertips, a pastry cutter, or a fork to blend the butter into the dry ingredients. Continue mixing until the topping resembles coarse crumbs with small pieces of butter throughout.

These small pieces of butter are important because they melt during baking, creating a crisp, golden topping with a rich homemade flavor.

If desired, mix in chopped pecans or walnuts for extra crunch and a nutty taste.