Mathematica, 144 132 bytes
Since Inception, we all know the most efficient way to draw a maze.
c=0;Graphics@Most[Join@@{Circle[{0,0},i,{a=c-(r=Random[](d=2Pi-1/i)&)[],a+d}],Line[{{i},{i+1}}.{{Cos[c=a+r[]],Sin@c}}]}~Table~{i,9}]
Ungolfed and example output:
Of course, the lines are the walls. You're the minotaur who starts in the centre and needs to get out.