Step 1: Preheat oven to 400°F (200°C). Pierce sweet potatoes several times with a fork. Bake directly on the oven rack for 45-60 minutes, or until very tender. Let cool slightly, then peel and mash thoroughly until smooth. Reduce oven temperature to 350°F (175°C).
Step 2: In a large bowl, combine the mashed sweet potatoes, melted butter, granulated sugar, brown sugar, beaten eggs, evaporated milk or cream, vanilla extract, cinnamon, nutmeg, ginger, and salt. Mix until well combined and smooth.
Step 3: Pour the sweet potato filling into the unbaked pie crust. Place the pie on a baking sheet to catch any potential drips.
Step 4: Bake for 50-60 minutes, or until the center is just set (a knife inserted near the center comes out clean). If the crust browns too quickly, cover the edges with aluminum foil. Remove from oven and let cool completely on a wire rack.
Step 5: While the pie cools, prepare the Pecan Praline Crunch. In a medium saucepan over medium heat, melt butter and stir in brown sugar and heavy cream. Bring to a gentle boil, stirring constantly, and cook for 2-3 minutes until slightly thickened. Remove from heat and stir in vanilla extract, chopped pecans, and a pinch of salt.
Step 6: Carefully pour the praline mixture onto a sheet of parchment paper or a silicone mat, spreading it thinly. Let it cool completely until firm and brittle, about 30-45 minutes.
Step 7: Once the pie is completely cooled and the praline is firm, break the praline into small, irregular pieces. Sprinkle the pecan praline crunch evenly over the top of the cooled sweet potato pie.
Step 8: Slice and serve immediately, or store in the refrigerator. Enjoy your decadent creation!