Prepare crust: Preheat oven to 425°. Roll piecrust into a 13-inch circle on a lightly floured surface. Fit into a 9-inch pie plate; fold edges under, and crimp. Prick bottom and sides with a fork. Line piecrust with parchment paper; fill with pie weights or dried beans. Bake 9 minutes. Remove weights and parchment paper.
Whisk together egg yolk and cream; brush bottom and sides of crust with yolk mixture. Bake 6 to 8 more minutes or until crust is golden. Transfer to a wire rack, and cool. Reduce oven temperature to 350°.
Prepare filling: Stir together melted butter, 1 cup sugar, and next 2 ingredients in a large bowl until mixture is well blended. Add sweet potatoes and next 4 ingredients; stir until mixture is well blended. Pour sweet potato mixture into prepared piecrust. (Pie will be very full.)
Bake at 350° for 50 to 55 minutes or until a knife inserted in center comes out clean, shielding with aluminum foil to prevent excessive browning. Transfer pie to wire rack, and cool completely (about 1 hour).
Prepare meringue: Beat egg whites and next 2 ingredients at high speed with a heavy-duty electric stand mixer until foamy. Gradually add sugar, 1 Tbsp. at a time, beating until stiff peaks form.
Beat one-fourth of marshmallow crème into egg white mixture; repeat 3 times with remaining marshmallow crème, beating until smooth (about 1 minute). Spread over pie.
Bake at 400° for 6 to 7 minutes or until meringue is lightly browned.
Note: Pie can be made up to a day ahead. Prepare recipe as directed through Step 4; cover and chill up to 24 hours. Proceed as directed in Steps 5 through
I expected this to be good, but was very disappointed. The crust idea was good because it did not get soggy, but the pie wasn't worth the calories. I fed it to the dogs who would probably give it 5 stars.
Overall a good effort on a classic. WARNING: baking times on crust are inaccurate. Additionally, meringue is pretty, but the marshmallow overpowers the sweet potato taste. Good effort but unnecessarily over the top.
I made the marshmallow meringue and used with my own sweet potato pie recipe. It was a huge hit both times I made it. I used a piping tube for the meringue - it was beautiful. People were impressed and thought I used a blow torch to brown the top.
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