Cauliflower Casserole
["1 large cauliflower", "3 Tbsp. butter", "3 Tbsp. flour", "1 1/2 c. milk", "2 Tbsp. Parmesan cheese", "1 Tbsp. lemon juice", "1/2 tsp. salt", "dash of pepper", "2 egg yolks, beaten", "1/2 c. bread crumbs", "1/2 c. Cheddar cheese", "1/4 c. butter"]
["Boil whole cauliflower in salted water until just under cooked, about 15 minutes."]
["cauliflower", "butter", "flour", "milk", "Parmesan cheese", "lemon juice", "salt", "pepper", "egg yolks", "bread crumbs", "Cheddar cheese", "butter"]