Festive Plum Tart with Walnut Crust

This recipe came from a favorite of mine, Ina Garten otherwise known as the Barefoot Contessa."  I adapted it a little but for the most part it is as she published it on The Food Network.  It is sweet and tart and delicious! 

Ingredients for Plum Tart with Walnut Crust:

2 C. flour
3/4 C. packed brown sugar
pinch of kosher salt
3/4 C. finely chopped English Walnuts
1 1/2 sticks cold butter cut in dice size pieces
1 egg yolk
2 pounds (about 10-12) plums pitted and quartered
Ina used Italian prune plumbs I used red plums

Preheat oven to 400 degrees F.

Combine flour, sugar, and salt in a large bowl and cut the butter and egg yolk in with a pastry cutter, 2 forks, or your fingers until combined and has pea sized lumps! 

Press 1 1/2 cups of the crumb mixture into the bottom of a tart pan with a removable bottom.  Arrange the plums skin side down starting on the outside and working your way into the center.

Sprinkle the rest of the crumbs spreading them evenly across the top of the tart. Bake 40-50 minutes until lightly browned and the fruit is tender.

Serve with whipped cream and enjoy warm or at room temperature.   Yield 1, 9 1/2" tart.