Bake the sweet potatoes.

Preheat the oven to 200 degrees for this.

Wash the sweet potatoes, pat them dry, and prick holes in the skin with a fork.

Place them on a baking tray and bake for approx. 45 minutes until tender.

Short on time? Microwave them instead: Wash the sweet potatoes, pat them dry, and prick holes in the skin with a fork.

Place them in a microwave-safe dish with a lid and cook for 10 minutes at 900 watts.

Turn them over halfway through.

Meanwhile, sauté the spinach in a pan with a little oil or butter until wilted.

Slice the sweet potatoes almost all the way through.

Season the inside with a little salt and pepper.

Fill them with the spinach and beetroot sticks.

Crumble some feta and some coarsely chopped walnuts over the top.