Portobello Mushroom Burger with Blue Cheese and Caramelized Onions recipes

Name: Portobello Mushroom Burger with Blue Cheese and Caramelized Onions recipes
Ingredients: 2 tbsp active dry yeast; 1 cup + 2 tbsp warm water; ⅓ cup vegetable oil; ¼ cup sugar; 1 large egg; 1 tsp salt; 3 to 3½ cups all-purpose flour; 4 tbsp butter, melted; 1 tbsp sesame seeds; 6 Portobello mushrooms; 4 tbsp teriyaki sauce; 4 tbsp balsamic vinegar; 7 oz (200g) blue cheese; 2 medium red onions, finely sliced; ¼ cup olive oil; ¼ cup balsamic vinegar; 1 tbsp brown sugar; ½ cup cooked kidney beans; ⅓ cup tomato sauce; lettuce leaves