Step 1Heat the oven to 375 degrees. Grease muffin tins in each alternating cup.
Step 2In a large bowl, whisk together the eggs and egg yolks. Whisk in the corn syrup and sugar, then the melted butter, salt and bourbon. Stir in the pecan pieces.
Step 3Fill the pie shells: Brush the edges with the prepared egg wash and fill with the pecan filling, about one-fourth cup filling for each shell .
Step 4Bake the mini-pies, one tin at a time, in the center of the oven until the filling is set and the crust is puffed and golden brown, about 25 minutes.
Step 5Cool the pies, still in the tins, to room temperature, twisting them gently every few minutes so they do not stick to the pan.