Optional step for thicker oatmeal: Pour oatmeal mixture into a microwave safe bowl, and microwave for 30 seconds to 1 minute at 50 % power. (cupcakesandkalechips.com)
Cook and stir for a minute, then pour over the toasted oatmeal mixture. (foodnetwork.com)
Carefully pour the remaining oatmeal mixture on top of the filling and press down until smooth and firm. (theconscientiouseater.com)