Preheat oven to 350°F.
In a large bowl, mix crust ingredients well by hand until they form a dough.
If preparing small individual tarts, form into one-inch balls. If preparing one large tart, roll out the dough a bit bigger than your tart pan (I used a Wilton 11- x 1.125-inch pan).
Press the dough well into the pan and up the sides.
In a medium bowl, combine filling ingredients.
Pour into crust and garnish with additional pecans. Bake 30 to 35 minutes for a large tart.
To prepare small tarts, spoon one teaspoon filling into shell and top with a whole pecan. Bake small tarts for 20 to 25 minutes.