Preheat oven to 375 degrees.

Have all ingredients very cold.

Mix flour, salt and butter in food processor bowl. Pulse until texture of peas or rice. Add the oil and water and pulse just until dough starts to come together. Turn out onto plastic wrap and quickly form into disk; wrap tightly and return to refrigerator for at least 30 minutes.

Meanwhile, combine apples, butter, walnuts, cinnamon, and honey in a large bowl; stir to combine. Set aside.

On parchment paper, roll out chilled dough into a 12-inch circle. (Trim edges to neaten.) Pour apple mixture into center of disk and spread evenly to within 1 1/2 inches of edge. Fold edges toward center. Sprinkle all with 1 tablespoon sugar.

Slide parchment paper with tart onto a sheet pan and place in hot oven for 40 minutes or until crust is golden and apples are tender and bubbling.