Preheat oven to 400°F (200°C).

Use a fork to prick sweet potatoes on all sides. Add to a lined baking sheet and roast for 30-40 minutes.

Add bananas to the pan (with their skins on) and roast an additional 15 minutes, until sweet potatoes are tender and banana skins are black.

Remove from oven and allow to cool to the touch.

Remove sweet potato skins and add to a large bowl. (You can usually peel the skins off of tender, cooked sweet potatoes with your hands!) Peel bananas and scoop insides into the same bowl.

Add remaining mash ingredients and beat with a hand mixer, until fluffy and whipped. Transfer to a 13x9-inch casserole dish.

To a large mixing bowl, add topping ingredients and toss to coat.

Sprinkle topping over sweet potato mash and bake for 20 minutes, until golden and crisp on top.

Serve and enjoy!