"intending on" is correct and usable in written English.
You can use it to indicate that you have the purpose or intent to do something. For example, "I am intending on visiting my grandparents this weekend."
For example, if you were not intending on giving out your personal information (such as when shopping online) but the website asks you to input sensitive data, then you should cautious.
Someone should carefully think out how much gravy that they're intending on making, such as is it for one, two or more people.
In the mean time: if you see a screen like the one in the screenshot above and you weren't intending on provisioning your handset with new settings, you should certainly avoid hitting the "Install" button.
"We're intending on having a lot of fun with it".
We're intending on it being a celebration of it all.
They're still putting money into retirement funds, and they aren't intending on spending it for decades.
"I don't intend on doing anything different," he said.
Now, at 65, Zachary intends on finally making the journey.
This shows the officer that you don't intend on driving off.
And I, for one, intend on staying the course.
We intend on being one of them.
