Apple Walnut Tart - cooking recipe

Ingredients

1 sweet tart crust (see Mean Chef's Sweet Tart Dough)
2 tablespoons apricot preserves, thinned with water
4 granny smith apples
2 teaspoons lemon juice
1/2 cup walnuts, coarsely chopped
2/3 cup sugar
1/4 cup all-purpose flour
1/2 teaspoon ground cinnamon
4 tablespoons unsalted butter, softened

Preparation

Prebake tart shell and brush warm shell with apricot preserves. (SQ note - Baking time was not included in this recipe but listening to reviewers leads me to think that 15 minutes at 350F should be about right.).
Peel, core and slice apples.
Sprinkle with lemon juice.
Arrange apple slices in tart shell.
Scatter walnuts on top of fruit.
Combine sugar, flour and cinnamon in small bowl.
Add butter and work with fingers to form a crumb topping.
Sprinkle over tart.
Bake at 400 for about 40 minutes or until top is golden brown.