Lentil Soup with Butternut Squash

Name: Lentil Soup with Butternut Squash
Ingredients: * 1 stalk celery, diced; * 1 small leek, white part chopped; * 1 medium carrot, diced; * 1 tbsp olive oil; * 3 cup vegetable broth; * 1/2 cup black beluga lentil; * 1/2 small red bell pepper, chopped; * 1 small butternut squash, peeled, seeded, cubed and roasted; * 2 tbsp tomato paste; * 1 tbsp malt vinegar; * 1/2 tsp ground chipotle pepper; * salt to taste; * toasted pumpkin seed