National Lacy Oatmeal Cookie Day is celebrated annually on March 18 in the United States. This day honors Lacy Oatmeal cookies, which are thinner and crispier compared to traditional chunky oatmeal cookies. They are often enjoyed with ice cream or other desserts and come in various flavors, making them a sweet and healthier option. Unlike classic oatmeal cookies, Lacy Oatmeal cookies do not contain whole oat grains, appealing to those who prefer the flavor without the texture. The cookies can be made using different recipes, with popular variations including chocolate chips, nuts, and raisins. Oats, the primary ingredient, are known for their health benefits, including reducing cholesterol and aiding metabolism.