Preheat the oven to 350 degrees. In a large bowl, combine the flour, sugar, almonds, oats, and salt. In a large skillet, melt the butter in the oil. Add the granola mixture and cook over moderate heat, stirring constantly, until golden, 5 minutes; transfer to a 9-inch glass pie plate and let cool slightly.

Using a flat-bottomed glass, gently press the granola evenly over the bottom and side of the pie plate to form a 1/2-inch-thick crust. Freeze the crust for about 10 minutes, until completely cooled.

Meanwhile, in a bowl, whisk the yogurt with the eggs, sugar, lemon juice, and vanilla; whisk until smooth. Pour the filling into the pie shell and bake for 25 minutes, until the filling is set but still slightly jiggly in the center. Let stand at room temperature for 5 minutes. Pour the warm apricot preserves on top of the yogurt and gently spread in an even layer. Refrigerate until chilled, at least 2 hours. Using a warm knife, cut the pie into wedges, and serve.