Hi! I understand that your Recipe Keeper app on your Windows 10 desktop crashed, and now when you try to reinstall it, the system says the app is already installed, even though you removed it from the list of apps. Let's work through this together and get your app back up.

First, just to clarify, when you say you "removed it from the list of apps," did you uninstall it through the Windows Settings > Apps & features section, or did you just delete a shortcut or the app’s folder manually? This will help me suggest the right steps.

Meanwhile, here's a step-by-step approach we can try to resolve the reinstall issue:

1. Check for residual files and uninstall completely:
- Go to Settings > Apps & Features.
- Search for Recipe Keeper; if it's there, try uninstalling it again.
- If it’s not listed, sometimes remnants remain in the system registry or app data folders.

2. Remove leftover files and cache:
- Open the File Explorer and navigate to %AppData% (type this in the address bar).
- Look for any folders named "Recipe Keeper" or related and delete them.
- Also check %LocalAppData% for similar folders.
- This clears cached files that might prevent a fresh install.

3. Use a third-party uninstaller (like Revo Uninstaller) to scan for leftover files and registry entries related to Recipe Keeper if normal uninstall is not working.

4. Restart your computer to ensure all changes are fully applied.

5. Attempt to reinstall Recipe Keeper from the official site or trusted source again.

If you continue to get a message saying the app is already installed, it could be that Windows Installer still has the app registered. In that case, you might need to:

- Use the Microsoft Program Install and Uninstall Troubleshooter to fix problems that block programs from being installed or removed. You can download it from Microsoft’s website.

Would you like me to guide you through downloading and running this troubleshooter?

Finally, if these steps don’t work, I can help you collect some logs or more advanced diagnostics to escalate the issue to our development team.

Please let me know what you have tried exactly so far and if you want to proceed with these steps. I’m here to assist you!