I built two 2-3/4" thick true butcher block rock maple countetops
joined in an "L" configuration. ("True" meaning end-grain up.)

It is a lot of work--almost 700 individual blocks in mine--and heavy.
Buying would probably be preferable, but I've not seen endgrain tops
for sale other than cutting-board size.

It is just about impossible to dent the endgrain maple, but it will
scorch and stain.