2 tablespoons butter
12 buttery round crackers, crushed fine
1 ½ teaspoons lemon juice
½ teaspoon seasoned salt
¼ teaspoon ground black pepper
½ teaspoon garlic salt
2 eggs, beaten
1 cup mayonnaise
1 cup shredded sharp Cheddar cheese
1 (10.75 ounce) can condensed cream of mushroom soup
2 (10 ounce) packages chopped frozen broccoli, thawed
1 onion, chopped
3 tablespoons butter