Create redundant grub bootloader on Debian

I have a Debian based server, where every partition is RAIDed, except the one that has /boot/efi. This means that I will still have all my data after a disk failure, but the system may be unable to boot. Is there a good way to create a redundant grub install / EFI partition? I tried mdadm RAID with v0.90 headers, but its fragile thus unsupported . I also found that grub supports syncing multiple EFI partitions on Ubuntu, but it's also not available on Debian.