What adult tells her employer, she's bored? Something is not quite right with this story. Sorry, OP.

OP I say you have only two options here. Either a). cut her hours or b). assign her other tasks.

I think it is quite rude of her to say she is bored, but at least she feels comfortable around you to be honest.

Could you keep her on part-time and she could perhaps find another part-time job to take up the slack?

OP here. Definitely not making it up. She is an amazing, loyal nanny, and I think she wanted to let me know that she had time on her hands, which I appreciate.

We looked into cooking classes, but I had a hard time finding ones that were offered, for example, at a 10:00 on Thursday. The ones that we found (and I did not do an exhaustive search) at times that would work were mostly professional, but if anyone knows of any, I'd be interested.

I have had her make some dinners that require multiple parts, and are things that I'd never take the time to make, and, gosh, they were delicious, but I don't need to eat like that every week!

I will ask what she is interested in doing to fill the time. Thanks!

What the hell is her problem? It sounds like you let her come and go as she pleases. It's not as if you are confining her to the home. I've had situations like this as a nanny and I just do what ever I want and take into consideration how much time I have to do an activity.

Not your problem. This is weird.

Volunteer in the kids classrooms