FIRST, STEAM THE SQUASH AND ONION LIGHTLY, DRAIN AND SET ASIDE.
IN A MEDIUM BOWL, PLACE 1/2 OF CRACKERS AND ¾ OF CHEESE.
PLACE THE SQUASH AND ONION IN A LARGE BOWL AND ADD THE CRACKERS AND CHEESE MIXTURE TO IT.
WHISK THE EGGS AND MILK TOGETHER IN A SMALL BOWL THEN POUR OVER THE SQUASH MIXTURE.
ADD ½ OF MELTED BUTTER INTO SQUASH, ADD SOME SALT AND PEPPER AND MIX WELL TOGETHER.
IN A 9×13 PAN, SPREAD THE SQUASH MIXTURE AND TOP WITH THE REMAINING CRACKERS AND BUTTER.
IN A PREHEATED OVEN TO 400 DEGREES, BAKE FOR 25 MINUTES.