To Bake the Sweet Potatoes
Pre-heat oven to 400°F (204°C)
Wash the sweet potatoes and place on a parchment lined baking sheet. Pierce the potatoes once or twice with the sharp tip of a knife to vent. Bake 1 hour or until tender. To test, use an oven mit and gently squeeze the potatoes. Allow the potatoes to cook enough to handle, or to room temperature, and peel.
The Soufflé Filling
Preheat oven to 350°F (177°C)
In a large mixing bowl, add the baked sweet potato filling and use an electric hand mixer to whip until creamy and fluffy. Next, add the eggs and use the hand mixer to combine. Then add the brown sugar, cinnamon, vanilla extract, nutmeg, coconut, and raisins. Mix just enough to combine.
Transfer the sweet potato soufflé mixture to a baking dish and set aside.
Prepare the Topping
In a small bowl combine the brown sugar, all purpose flour, butter and oats together using the tines of a fork. Stir in pecans. Sprinkle the topping over the sweet potato soufflé filling.
Bake the sweet potato soufflé for 45 minutes to 1 hour, until golden brown and heated through.
Allow to cool slightly before serving.