Margherita Spaghetti Squash Boats

Ingredients

• 2 tbsp olive oil, divided
• 2 small spaghetti squash
• 1 small sweet onion, diced
• 1/2 red or yellow bell pepper, diced
• 2 cups baby portabella mushrooms, cleaned and sliced
• 2 cups baby spinach, chopped
• 1 (15-ounce) can white beans
• 1 (24-ounce) jar Marinara Sauce
• 2 cups mozzarella cheese, shredded and divided
• 1 cup Parmesan cheese, divided
• Salt and pepper, to taste