Beefy Stuffed Peppers with Tomato Sauce

Name: Beefy Stuffed Peppers with Tomato Sauce
Prep time: 20 min
Cook time: 2 h
Total time: 2 h
Yield: 6 portions
Ingredients: 4 oz cheddar cheese; 2 oz Parmesan cheese; 1 oz walnut halves; 2 garlic cloves; ½ oz avocado oil; 5 oz yellow onions; 5 oz zucchini; 1 tbsp tomato paste; ½ tsp dried thyme; ½ tsp smoked paprika; ½ tsp ground cumin; ¼ tsp cayenne pepper; 2 oz chicken stock; ½ tsp kosher salt; 1 pinch ground black pepper; 6 bell peppers; 12 oz ground beef; 12 oz ground pork; 1 large egg; 28 oz tomato sauce, canned