To prepare a two hour spaghetti sauce beef recipe, you'll need: 1 pound ground beef 2 tbsp. kosher salt 1 1/2 cups water 1 tablespoon thyme 1 teaspoon ground black pepper Instructions: Preheat the oven to 450 degrees F. Place the beef, onion, garlic, salt, pepper, and paprika in the slow cooker. Cover and cook on low for 2 hours. Remove the pot from the stove and add the tomato paste and water. Bring to boil. Reduce the heat to low and simmer until the sauce thickens, about 20 minutes. Serve with sour cream and Parmesan cheese.