Tuna Casserole

Name: Tuna Casserole
Prep time: 12 min
Cook time: 45 min
Total time: 57 min
Cuisine: American
Ingredients: 8 ounces medium-size shell pasta; 5 Tablespoons butter (, divided); 2 ribs celery (, diced); 1/4 cup onion (, diced); 3/4 cup frozen peas; 1 clove garlic (, miced); 5 Tablespoons all-purpose flour; 2 cups low-sodium chicken broth; 1 cup milk (, warmed); 1/2 teaspoon kosher salt; 1/4 teaspoon freshly ground black pepper; 1/8 teaspoon dried dill weed; 2 teaspoons fresh lemon juice (, more if desired); 2 Tablespoons fresh chopped parsley (, minced); 1 cup freshly grated parmesan cheese (, divided); 5 ounces canned albacore white tuna, packed in water (, or more if desired); 1/2 cup Ritz crackers* (, crushed); 1 Tablespoon butter (, melted)