Ed (and others) here is HT'ing info as provided by Devin Thomas (Hoss) who is generally accepted as "the" expert on HT'ing AEB-L. First the link to his thread which is fairly long and requires two ovens.
https://www.bladeforums.com/threads/how-to-heat-treat-aeb-l-in-the-home-shop.1353014/
Here is my consolidation which I ran past Hoss to be sure I had it correct to use only 1 oven
(any errors are mine, not Hoss).
Hoss highly recommend making 5 test coupons, heat the first one to 1900⁰F and plate quench, second to 1925⁰F, third one to 1950⁰F, 1975⁰F, 2000⁰F. This will give you a starting place for what temperature to use. Repeat this test with 5 new test coupons except do a sub-zero (freezer) or Dry Ice quench after the plate quench. With each set of test coupons measure the HRC and you should find a peak hardness at a specific temperature for your furnace.
It is also good to break each of the test coupons and see grain size and toughness differences. All furnaces are different, each will have a different soak time and or temperature required, even two ovens of the same make can be different.
After determining correct temperature to use, then use below.
Soak blade at 1725ºF for 10 minutes, plate quench – this is called the “Pre-Quench”.
Hoss and Larrin say it’s ok to wait until next day for 2nd step (Hoss's son is Larrin who is a PHD metallurgist with a hobby of the knifemaking facet of metallurgist)
Second quench with only one oven set at 1950-2000⁰F (depending on results of test above).
AFTER oven stabilizes at 1975F, then place blade in oven and soak (austenitze) for 15 minutes (Sandvick says 8 minutes for blade thickness). It’s not good for blade to be in oven the long period of time required for ramping up.
Dry ice quench right after plate quench, continuous cool down. At this point expect 62 to 63 Rc. With an extended cryo (LN) there will be some nano sized carbides that precipitate to provide slightly better wear resistance with a slight decrease in toughness.
Temper twice, first temper for 1 hour at 350F, 2nd temper for 2 hours – choose temperature based on Rc test prior to temper. Tempering at 350F doesn’t change Rc much at all. Each 25F increase in temper temp seems to drop 1 Rc point. Tempering at 375F seems to drop from 62-63 Rc range to 61-62 Rc range, and moving to 400F would expect to drop another point. There is no big drop off in toughness by using 300°F, so it is probably safe to got that low for tempering temperature with this steel, if the extra hardness is desired:
Final Rc post temper should be 60 to 61 Rc for best kitchen use. (some folks are reporting a Rc of 62 works good for a kitchen slicer)
DevinT says: For HT'ing without dry ice, Lower the quench temp to 1925⁰F,
(per tests 1950⁰F in my oven) keep the soak time at temp to ten minutes, quench in oil or plate quench, faster is better, put it in your freezer (-5ºF) right after the quench, this will keep the RA down. Temper at 325-350ºF.
To anneal AEB-L wrap blades in foil, soak at 1350⁰F
for 12 hours – does not require slow cooling. This is a very good condition to re-harden from. This is a simple sub-critical anneal to allow straightening before re-heat treating in cases of warpage. Once the sub-critical anneal is complete, ramp oven to 1725F, then place blade in oven for 20 minute soak. Remove blade, clamp in quench plates to cool, ramp oven to 1975F for final HT. 
