italian sausage stuffed zucchini

Ingredients

• 4 large zucchini (about 2 lbs.)*
• 1.5 Tbsp cooking oil, divided
• 1 lb. Italian ground sausage**
• 1 small yellow onion, diced
• 2 garlic cloves, minced
• 1/2 tsp Italian seasoning
• 3/4 tsp salt, divided
• 1/2 tsp freshly cracked black pepper, divided
• 1/4 tsp garlic powder
• 3/4 cup marinara sauce
• 1/4 cup breadcrumbs
• 1 cup shredded mozzarella