Preheat the oven to 400°F and line a baking sheet with parchment paper.
Cut off the ends of each sweet potato.
Slice into 1/2 inch lengthwise pieces by standing the sweet potato up on the cut end, and slicing from the top of the sweet potato, down to the cutting board.
Lay the sweet potatoes on a parchment lined baking sheet and bake for 20-25 minutes at 400°F until fork tender. There's no need to put oil on them or flip them.
For The Candied Pecans
Prepare a baking sheet with parchment paper and set aside. (You’ll transfer the nuts to the parchment paper to cool) I love these 1/2 sized baking sheets for this!
Add the oil, maple syrup, salt and cinnamon, into a medium sized skillet and stir to combine.
Once combined, add the pecans and stir until all the pecans are coated in the syrup mixture.
Increase the heat to medium and gently stir until the syrup mixture begins to bubble. Let the pecans cook in the syrup mixture for 3-5 minutes stirring occasionally to evenly coat the nuts and prevent sticking. WATCH THEM CAREFULLY TOWARDS THE END THEY GO FROM PERFECT TO BURNED QUICKLY!
Once most of the bubbles have disappeared and your nuts look sticky, transfer them to the parchment paper to cool for about 20-30 minutes. Make sure the nuts are spread out in a single layer when cooling.
For The Marshmallow Creme
Add 3 tablespoons of water into the stand mixer bowl. Slowly sprinkle the gelatin into the water, stirring as you go so it doesn’t clump up. Set aside to let bloom (soak up the water) while you’re heating the sugar mixture. Attach the whisk attachment to the stand mixer.
Into a medium saucepan, add the maple syrup, honey, and remaining 1/2 cup + 1 tablespoon of water.
Bring to a gentle boil over medium heat. Once it starts bubbling, turn the heat down to medium low and let it simmer until the thermometer says 240℉. This usually takes anywhere from 10-15 minutes.
Once the sugar mixture reaches 240℉, slowly (and carefully!) poor the sugar mixture into the water/gelatin mixture while it's mixing at medium speed.
Mix on high for 5 minutes, then add in the vanilla and salt. Mix for 5 more minutes on high.
To Assemble The Sweet Potato Casserole Toast
First, get your sweet potatoes cooking.
Next, candy the nuts (or roast them for a less sweet version of this recipe - see notes) so they have time to cool down. Roughly chop the nuts when cooled.
Then prepare the marshmallow creme. When the sweet potatoes are done cooking, top them with your desired amount of marshmallow creme, and place them under the broiler until charred. This will take 1-5 minutes depending on your broiler. When the marshmallow creme is nice and toasted, remove the sweet potatoes from the oven and top with the chopped pecans.
Notes
If you want these paleo sweet potato casserole toasts to be less sweet, opt for toasted pecans instead of candied pecans. This simple swap will decrease the sweetness of the whole dish. To toast the pecans, preheat the oven to 350 °F. Place the pecans onto a parchment lined baking sheet, and spread them out until they're in a single layer. Drizzle them with oil and give them a sprinkle of salt. Roast the pecans for 8-10 minutes. When you smell a nutty smell, that's a good sign that they're done. Let them cool before chopping. Feel free to swap your favorite marshmallows for the marshmallow creme. Just place them onto the baked sweet potatoes, stick them under the broiler until charred, then add the chopped pecans. These would work well cut into rounds too! Such a fun appetizer!The marshmallow creme will start to stiffen up at room temperature. Try to time it so you spread it on the sweet potatoes right after mixing. That way it's nice and spreadable. It will still work and taste delicious when it's more stiff, it just won't be as easy work with.