Baked Ginger-Apple Crumble - cooking recipe

Ingredients

2 lbs cooking apples, pared, cored, sliced 1/4-inch thick (such as Granny Smith, Rome, Golden Delicious)
3 tablespoons granulated sugar
1 tablespoon chopped crystallized ginger
1/2 teaspoon ground ginger
1/2 teaspoon lemon zest
2 tablespoons fresh lemon juice
1/3 cup walnut pieces
2/3 cup old fashioned oats
2/3 cup all-purpose flour
1/2 cup light brown sugar (packed)
1 teaspoon cinnamon
1/8 teaspoon salt
1/2 cup unsalted butter, cold, cut into 10 pieces
whipped cream, for serving

Preparation

Heat oven to 375 degrees. Butter 9-inch square baking pan.
Toss apples with granulated sugar and both gingers. Add lemon zest and juice and toss again. Spread apples evenly in buttered pan.
Coarsely chop nuts and mix with oats, flour, brown sugar, cinnamon, and salt in mixing bowl. Cut in butter with pastry blender until mixture resembles very coarse crumbs. (Or coarsely chop nuts in food processor. Add dry ingredients and pulse several times to mix. Place butter on top and pulse until mixture resembles very coarse crumbs.) Sprinkle topping over apples.
Bake until apples are tender and topping is browned, 45-50 minutes. Serve warm with whipped cream.