Kid-friendly Italian "Lenticchia" (Lentil) Bolognese Pasta Recipe - Sticky Fingers Cooking

Ingredients

• 7 C water, divided
• 16 oz dried or fresh fettuccine noodles **(for GLUTEN ALLERGY sub gluten-free/nut-free fettuccine or other pasta)**
• 5 green onions
• 2 carrots
• 2 celery stalks
• 2 garlic cloves
• 1 zucchini
• 8 oz cremini mushrooms
• 2 T olive or vegetable oil + more for sautéing
• 1 T sugar
• 1 T Italian seasoning
• 1 C red lentils **(for LEGUME ALLERGY sub 1 lb white button mushrooms—more info below)**
• 1 28-oz can crushed tomatoes
• 1 tsp salt