The phrase "layer ingredients" means to put different parts or components of a recipe or dish one on top of the other, creating distinct layers within the food. Full definition
To make these brownies start by layering the ingredients in order in a one quart wide mouth jar. (iheartnaptime.net)
Place all pumpkin cream layer ingredients into food processor bowl and blend until smooth, stopping to scrape down sides of bowl as needed. (connoisseurusveg.com)
Place the stew meat in your slow cooker and start layering the ingredients on top. (mamarosemary.com)