To customize your meal planning sections, you can add a note into the meal time as a separator between recipes or ingredients. 
On the website, you can easily drag and drop your recipes and notes into the order you'd like to see them.
While on the app, you will need to add your events in the order you'd like them to be - so you can't plan all your recipes first and then add the notes in between, you will need to add a note, then a recipe, then another note, and then the next recipe.
Here's how this could look on your Planner: