Quoted from TDK-WPG:

Are you married to concrete? It would be easy and inexpensive to do a treated wood landing over the existing concrete, anchoring the frame to what you have in place there. Would require some ongoing maintenance but an easy DIY job.

Quoted from LouMatt:

No idea if this helps...but they sell pre-made concrete form steps like this:
https://www.lowes.com/pd/Common-36-in-x-7-in-x-36-in-Actual-36-in-x-7-in-x-36-in-Concrete-Step-Standard-Concrete-Block/1000812258

Quoted from northvibe:

Is that 1 concrete pad/step poured into/attached to your foundation footer?

Quoted from northvibe:

well your door threshold seems to stick out over it. mmmmm. youd have to demo a little more, but you could add onto it to make more of a pad ie. 3x3 OR just a longer step/pad. If you want just the one step then it may be the door removal and figuring out what to do.

Quoted from pinballcorpse:

What it looks like is that there are 3 pavers-two short ones (1 at each end) and a longer one sitting on top of a poured concrete step. It doesn't look like the pavers "broke" per se, but rather the pavers are not well-adhered to the underlying concrete step. I see a lot of sand-were the pavers just sitting on sand placed on top of the step? I do not see a mortar bed under the pavers.
If there is any overhang and little-to-no bond, then the pavers will keep lifting up when anyone stands on the unsupported edge. (This can also pose a safety issue.) The center one probably is resisting uplift because there appears to be a section of wood at the door threshold on top of the back side of the longer paver.
If the center paver is easy to remove, the "easiest solution" is to just abandon the use of the pavers altogether and use the concrete step. This might make the height of the risers different (the height from the driveway onto the 1st step of the concrete versus the height of the step into the house). It is best to have the steps uniform in height.
If keeping that step and those particular pavers is the goal, the cheapest solution to keep that configuration is to remove the pavers, clean the underlying concrete step and backside of the pavers very well making sure there is no debris, and use either a mortar or adhesive to bond the pavers to the step. (Your local hardware/building supply store should be able to help you pick a material suitable for exterior use and your climate.) The key issues in keeping it durable will be to make sure the surfaces are clean, make sure there is adequate coverage and contact area with the adhesive between the pavers and the step and make sure the bonding material has adequate time to set/cure before stepping on the pavers.
Good luck.