First, we draw a circle. then by using several offset planes, make more circles

step 1 how to offset plane

Then, by using the loft function, we create a 3d model by connecting all the circles.

step 2 step 4

Of course, an egg holder must hold an egg, so we repeat our first step to make more circles

step 3 step 4

we repeat the loft function for those circles we drew to create a hole in the holder

Here's how the file looks like (with download link at image below!)

download here