01 -
Turn your oven on to 350°F and let it heat up.
02 -
Cut the sweet potatoes into slices and put them in a big pot. Pour enough water to cover them. Boil them for about 5 minutes until the edges start getting soft, but the centers stay a little firm. Drain and put them back in the pot.
03 -
Melt the butter in a pan at medium heat, then add in both sugars, cinnamon, nutmeg, salt, and vanilla. Stir it for around 5 minutes until the sugar dissolves.
04 -
Pour the sauce over the potatoes and gently toss to coat them. Put everything in a baking dish and bake for 10 minutes. Take it out, stir gently in the syrup, then bake for another 15-20 minutes until the sauce thickens and the potatoes are done.
05 -
Leave it to sit for 5 minutes before serving.