Quick pumpkin from the pan

Ingredients

• 14 oz Hokkaido pumpkin
• 1 onion
• 1/4 cup raisins
• 1 1/2 tbsp rum
• 1 tbsp vegetable oil
• 1 1/2 tbsp white balsamic vinegar
• 1 1/4 cups vegetable stock
• 1/2 tsp nutmeg
• 1/4 cup pumpkin seeds
• 2 cups arugula
• salt
• pepper
• pumpkin seed oil for serving