Heat grill. Put the grill screen on grill to heat up.
Cut tomatoes into 1/2-inch-thick slices. Coat slices with canola oil and sprinkle with Cajun Blackening Rub and salt; set aside.
Mix sour cream, mayonnaise, and TABASCO® Sauce in bowl until blended; set aside.
Coat grill screen with oil; place tomato slices on screen and cook uncovered until browned, about 6 minutes, flipping halfway through.
Serve grilled tomato slices topped with dollops of Cajun mayonnaise.
Makes 4 servings.
Recipe by Dave Joachim and Andrew Schloss.