[header] How to make cornflake cookies [title] Preheat the oven to 190ºc/350ºf. [step] Prepare two baking trays (sheets) by lining with baking (parchment) paper or a silicone baking sheet. [title] Place the butter, sugar and vanilla into a large mixing bowl. [step] Beat until a soft, creamy and light mixture forms. 
[title] Beat in the eggs one at a time. [step] Continue beating until the ingredients are well combined.