What special stuff do they put in Dutch apple pies? 
It's the delicious crumbly topping, instead of the regular pie dough.
You can make the pie with your favorite pie dough (add a tablespoon of Vodka to make the crust flakier), or you can simply smoosh down the same "topping" and it will form a crust. This is a much faster way....and akin to making cheesecake crust, which is basically crushed graham crackers, butter and brown sugar.
Here's a really simple recipe.
Dutch Apple Pie Recipe
Prep: 20 min. Bake: 40 min.Yield: 6-8 Servings
•2 cups all-purpose flour
•1 cup packed brown sugar
•1/2 cup quick-cooking oats
•3/4 cup butter, melted
FILLING:
•2/3 cup sugar
•3 tablespoons cornstarch
•1-1/4 cups cold water
•3 cups diced peeled tart apples
•1 teaspoon vanilla extract
Directions
In a large bowl, combine the flour, brown sugar, oats and butter; set aside 1 cup for topping. Press remaining crumb mixture into an ungreased 9-in. pie plate; set aside.
For filling, combine the sugar, cornstarch and water in a large saucepan until smooth; bring to a boil. Cook and stir for 2 minutes or until thickened. Remove from the heat; stir in apples and vanilla.
Pour into crust; top with reserved crumb mixture. Bake at 350° for 40-45 minutes or until crust is golden brown. Cool on a wire rack.

You can use the same crust, put it in a pie pan/cassorle dish even, and then layer it with fresh fruit (lightly mixed with sugar to taste) and then top it with gobs of the topping.
I usually do NOT melt my butter, but, use cold butter, then just mix it all in with my hands....leaving it really crumbly. Yum.