Reddit reviews 10GBase-T SFP+ Transceiver, 10G T, 10G Copper, RJ-45 SFP+ CAT.6a, up to 30 Meters, Compatible with Cisco SFP-10G-T-S, Ubiquiti UF-RJ45-10G, Netgear, D-Link, Supermicro, TP-Link, Broadcom and More. …

This is what you're looking for

Only slightly cheaper at FS.com

I'm assuming your NICs are for SFP+ and not 10GbE, you'd be much better suited just using a DAC

Edit: Actually just buying a couple of these and some fiber would be about half the price of the DAC.

10GTek is who I normally get my cheap modules from, all work with my MikroTik switches no problem:

10G: https://www.amazon.com/dp/B01KFBFL16

1G: https://www.amazon.com/10Gtek-Compatible-SFP-GE-T-Transceiver-1000Base-T/dp/B01L6PQ6I2

Pick up a SFP+ 10Gb Base T module? Such as this off amazon , I am sure you can find it much cheaper.

I don't have that exact same configuration...but perhaps close enough to help you out. Here is my setup:

• Unifi US-XG-6POE
  
• QNAP TS-1272XU-RP NAS with Mellanox® ConnectX®-4 Lx SmartNIC
  
  Plugged into the Mellanox I have a 10GTek SFP+ to 10GBase-T transceiver (Amazon Link). I am running a CAT 6 patch cable (about 3 feet long) between this and one of the copper 10G network ports on the US-XG-6POE...works like a charm...has been running this way since July 23 of this year.

IM using a 10Gtek and it works fine

https://www.amazon.com/10Gtek-SFP-10G-T-S-Compatible-10GBase-T-Transceiver/dp/B01KFBFL16

https://www.amazon.com/10Gtek-SFP-10G-T-S-Compatible-10GBase-T-Transceiver/dp/B01KFBFL16

You could go with a 10gtek adapter. Here is one that should work (Cisco generally works with everything but they have a intel version as well)
10Gtek 10Gbase-T Sfp+ to copper

They aren't cheap but yes, you absolutely can and that's the point of SFP+.
https://www.amazon.com/10Gtek-SFP-10G-T-S-Compatible-10GBase-T-Transceiver/dp/B01KFBFL16