In a large bowl add shrimp, Cajun seasoning and the juice of 1 lime and toss and set aside.

Halve and pit the avocados scoop out the flesh and mash into a bowl. Add in salt, juice of half a lime and cilantro mix well.

Heat a large skillet on medium heat add about ¼ to ½ inch of oil in skillet (should be hot enough to bubble and sizzle when tortillas are added) Add tortillas and cook 1-2 minutes on each side until crispy. Remove to a paper towel to drain.

In the same skillet remove all remaining oil except 1 tablespoon. Add shrimp and cook 2-4 minutes on each side or until opaque and cooked through. Remove and set aside.

Spread the mashed avocado onto the tostadas. Top with shrimp, tomatoes, sour cream, cotija cheese and cilantro. Serve with lime wedges