Lentil and chickpea burger with tahini dressing

Name: Lentil and chickpea burger with tahini dressing
Prep time: 45 min
Cook time: 1 h 30 min
Total time: 1 h 30 min
Yield: 8 portions
Ingredients: 200 g sesame seeds; 50 g grapeseed oil; 1 pinch sea salt; 2 tbsp lemon juice; 1 tsp onion salt; 1 tsp honey; 50 g soy milk; 1 pinch granulated garlic; 100 g cheddar cheese; 150 g day-old bread; 4 sprigs fresh flat-leaf parsley; 1 red onion; 1 garlic clove; 1 tbsp dried oregano; 1 tsp mustard powder; 1 - 2 pinches cayenne pepper; 1 tbsp olive oil; 400 g canned lentils; 400 g canned chickpeas; 1 egg; 8 bread rolls; 1 avocado; 200 g Brie cheese; 1 - 2 Roma tomatoes; 4 leaves cos lettuce