Preheat oven (electric cooker: 180 °C/circulating air: 160 °C/gas: see manufacturer). Line a baking tray with baking paper. Wash sweet potatoes thoroughly. Cut deep into the potatoes crosswise at intervals of approx. 3 mm close together, but do not cut through them. Cut bacon into 2-3 cm wide strips and stick them into some of the incisions. Place the sweet potatoes on the tray. Spread with barbecue sauce, season with salt and pepper. Bake in a hot oven for about 45 minutes.
Meanwhile peel the onion and garlic. Chop onion finely, chop garlic finely. Clean, wash and drain the spinach.
Grate cheese finely and mix with Panko. Sprinkle cheese crumbs over the potatoes 15-20 minutes before the end of the baking time.
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