According to the search results, there are different recommended temperatures for roasting sweet potatoes. Here are some options:

• 450°F: Delish recommends roasting sweet potatoes at 450°F for a nice golden char on the outside while maintaining a custardy smooth core.
• 425°F: Allrecipes suggests preheating the oven to 425°F and roasting sweet potatoes for about 30 minutes. Delish also recommends baking sweet potatoes at 425°F until tender.
• 375°F: Minimalist Baker recommends roasting sweet potatoes at 375°F for 25-35 minutes, which is low enough to allow the sweet potato to cook through fully, but high enough to provide a little caramelization.

The recommended temperature may depend on the desired texture and cooking time. Its important to note that the size of the sweet potato can also affect the cooking time. Its recommended to test the sweet potatoes for doneness by sticking a knife or fork into the thickest part of the potato. If theres no resistance, its good to go.