Mushroom Cheeseburger Mac and Cheese

Name: Mushroom Cheeseburger Mac and Cheese
Ingredients: 2 tablespoons extra-virgin olive oil; 8 ounces ground beef; 4 ounces white button mushrooms, trimmed and finely chopped; 4 ounces cremini mushrooms, trimmed and finely chopped; 1 small onion, chopped; 1 tablespoon all-purpose flour; 2 teaspoons paprika; 1 teaspoon mustard powder; 1/2 teaspoon garlic powder; Kosher salt and freshly ground pepper; 6 tablespoons ketchup; 2 cups low-sodium beef broth; 3/4 cup half-and-half; 2 cups elbow macaroni (about 8 ounces); 4 ounces mild yellow cheddar cheese, shredded (about 1 cup); Chopped fresh parsley and chopped dill pickles, for topping