*Please do not use a pre-made refrigerated or frozen pie crust. This pie needs high sides and the store-bought crusts are just not high enough. Also use a 9.5 to 10-inch deep-dish pie plate.
For the Crust: (We do not recommend that you use a frozen or refrigerated store-bought pie crust dough as it may not contain all of the filling)
6 tablespoons unsalted butter
1½ cups all-purpose flour
½ teaspoon kosher salt
1½ teaspoons granulated sugar
2½ tablespoons cold vegetable shortening
¼ cup ice cold water, plus more as needed
1 cup unsulfured molasses
1/3 cup Lyle’s Golden syrup
3 tablespoons brown sugar
1 teaspoon vanilla extract
3 whole eggs beaten
1 cup boiling water
1½ teaspoons baking soda
1½ cups all-purpose flour
2/3 cup brown sugar
1 teaspoon ground cinnamon
½ teaspoon freshly ground nutmeg
1/8 teaspoon salt
1 stick (8 tablespoons cold butter)
Optional heavy cream for whipping, for topping
Optional cinnamon, for garnish
To make the crust*, cut the butter into pats and place flat on a plate. Place the plate in the freezer while you prepare the remaining ingredients.
In the bowl of a food processor, place flour, salt and sugar and pulse to combine. Add cold shortening and pulse a few times. Add frozen butter and pulse until the butter is pea-sized.
Pulse while adding cold water, stop and check by pinching some dough and if it is crumbly, add a tablespoon of water at a time until the dough comes together.
Pour out onto a floured counter and press together into a disc. Wrap tightly with plastic wrap and refrigerate 30 minutes.
Remove dough and on a floured surface, roll dough so that it is two inches larger than your 10” pie plate. Place the dough over the pie plate and gently press in and up and over the edges. With a knife or scissors, cut extra. Pinch the overhanging dough into a high ridge all around and then go back over and a make decorative edge, again, keeping it high. (I use thumb and index finger on one side and the knuckle of my index finger on the opposite side and press together to make a scalloped edge) Note that the filling is liquid and will leak through if your dough has any rips or punctures so make sure it is solid.
Place the completed pie dough in the freezer for 30 minutes to set up so that the sides don’t collapse while baking.
Preheat oven to 375 degrees and once the pie plate with the dough sits in the freezer for 30 minutes, remove, add parchment and either pie weights or dry beans, fold parchment to fit up sides and fill to the top with the pie weights. (To make the parchment fit, cut parchment into a circle larger than the pie plate and make four slits a few inches long around the edge half way to center so when you place it in the shell, it overlaps and fits up the sides.) Place in the oven for 15 minutes. Remove pie weights or beans. The shell is now ready to be filled.
Preheat oven to 400 degrees F.
While the shell is being prepared, make the filling by placing molasses, golden syrup, brown sugar, vanilla and beaten eggs into a large bowl. Whisk until well combined.
Boil the water and measure out one cup into a 2-cup measuring cup. Add baking soda and stir. It will bubble up a bit which is why you need a 2-cup measure.
While whisking the molasses mixture, add the hot water slowly until all in and whisk to combine. Set aside for now.
In the bowl of a food processor, add flour, sugar, cinnamon, nutmeg and salt and pulse to combine. Add cold butter and pulse a few times until butter is pea sized.
Pour the molasses mixture into the prebaked pie shell and sprinkle the dry topping all over the top, right up to the edges. Some of it will sink which is fine.
Place in oven for ten minutes then reduce temperature to 350 degrees F. Bake for 35 minutes or until set. To check, give it a little jiggle and if it is not finished baking, the center will still be liquid.
Allow the pie to sit for ten minutes before serving warm, or chill and serve cold.
Whip heavy cream and serve a dollop with the pie if desired. Sprinkle cinnamon on top too if you’d like.