Preheat oven 415 degrees F. Line baking sheet with foil, set aside.
Cut the sweet potatoes, lengthwise about 1/2-inch thick. Place the cut slices on the prepared baking sheet. Drizzle with olive oil and sprinkle with sea salt, toss to coat.
Bake for about 15 minutes or until soft enough, remove from the oven and carefully cut out the bunnies with the cookie cutter. note: may need to let cool before cutting.
Place back into the oven and continue baking for another 20-30 minutes or until the potatoes are soft and slightly roasted.
Remove and let cool for 5-10 minutes before serving to the wee ones.