Braseltouille Meatatarian Ratatouille

Name: Braseltouille - Meatatarian Ratatouille
Ingredients: 1 pound spicy ground sausage; 1 tablespoon sausage drippings; 1 green bell pepper, chopped; 0.5 white onion, chopped; 2 cloves garlic, minced; 1 tablespoon olive oil; 2 zucchini, halved lengthwise and sliced; 3 yellow squash, halved lengthwise and sliced; 1 (14.5 ounce) can diced tomatoes; 1 tablespoon Italian seasoning; salt and ground black pepper to taste; 1 cup shredded Cheddar cheese