French toast
From The Big Bang Theory Wiki
A breakfast food eaten in numerous countries all over the world. It consists of bread soaked in a mixture of beaten egg and sugar, which is then either fried or grilled. Depending on the country various toppings are added once the bread is browned on both sides (for more info see wikipedia).
Penny makes French toast on a Monday morning in September 2009 in Leonard's and Sheldon's apartment. This severely disturbs Sheldon since it is Oatmeal day. Penny offers syrup and cinnamon sugar as toppings (0303).