Roasted Sweet Potato Tabbouleh Bowl

Name: Roasted Sweet Potato Tabbouleh Bowl
Ingredients: 2 medium sweet potato (approx 550g); 1.5 cups cooked lentils; 7 oz tomatoes (finely chopped); 1 cucumbers (finely diced); 2 spring onions (finely chopped (scallions)); 1 garlic clove (minced); 1/4 cup fresh mint (finely chopped); 1/4 cup fresh parsley (finely chopped); sea salt flakes (to taste); freshly cracked black pepper (to taste); 1/4 tsp sumac; 2 tbsp pepitas (pumpkin seeds); 1/4 cup hummus; 1 tbsp lemon juice; 1 tsp maple syrup; water (to thin to desired consistency (optional))