Squash Casserole I SOURCE: Nancy Ingredients 2-3 lbs yellow squash, sliced 1 can cream of chicken soup 8 oz. mild cheddar 1 stack Ritz crackers 1/2 stick butter Step by Step Instructions STEP 1 Steam sliced squash until just tender. STEP 2Mix soup and sour cream, add squash and cheese, mix. STEP 3Layer half crushed crackers, then squash mixture, then remaining crackers. STEP 4Bake for 35 minutes at 350 degrees.