Spicy kale and red pepper sauté

Ingredients

• 1 tbsp olive oil
• 41643 red onion , thinly sliced
• 1 red bell pepper , thinly sliced
• 1/2 bunch kale , ribs removed, coarsely chopped
• 1 tbsp water
• 1/4 tsp salt
• 1/4 tsp hot-red-chili-flakes
• 1 tbsp red-wine vinegar
• 1/4 tsp honey
• 2 tbsp shaved parmesan