with little prodding

[IQU3838]

Hi

Could anyone tell me what "falls open with little prodding" mean in the following context?
Thank you in advance.

"I pull down The Joy of Cooking from the cabinet, and it falls open with little prodding to Brownies Cockaigne."

BTW, The Joy of Cooking is a cookbook, and Brownies Cockaigne is a recipe in the book.

Thank you for your kind help.

[Tdol]

It opens at that page because the recipe has been used frequently.