One Pot Baked Spinach and Artichoke Mac and Cheese

Name: One Pot Baked Spinach and Artichoke Mac and Cheese
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: American
Ingredients: 6 tablespoons salted butter, at room temperature, plus more for greasing; 1 (1-pound) box short-cut pasta, such as macaroni; 2 cups whole milk ((see Note)); 1 (8-ounce) package cream cheese, cubed; 3 cups shredded sharp cheddar cheese; Kosher salt and freshly ground pepper; Ground cayenne pepper; 2 cups packed fresh baby spinach, chopped; 1 (8-ounce) jar marinated artichokes, drained and roughly chopped; 1½ cups crushed Ritz crackers (about 1 sleeve) ((about 1 sleeve)); ¾ teaspoon garlic powder