Set Traeger to smoke with lid open for about 5 minutes. Close lid and set temperature to 375 degrees F.
Add cherries to a 9x13 baking dish. Toss with lemon juice and almond extract.
If cherries are frozen, you can set them on the grill while it is heating up.
In medium sized bowl, combine almond and gluten free flours, sugar, baking powder and salt. Use a whisk to combine and eliminate lumps. In a separate bowl, combine egg, heavy cream and almond extract. Pour wet ingredients into dry and mix to combine. Mixture will be crumbly. Cover cherries with this mixture.
Slice butter into thin slices and spread as evenly as possible on top of cobbler mixture. Sprinkle with decorator's sugar.
Place cobbler onto grill and close the lid.
Bake on preheated grill for about 60 minutes until golden brown.