Add mayo, red pepper flakes, chili powder, salt, pepper, lime zest, and lime juice into a small bowl.
Mix the ingredients until they are creamed together.
Place grilled corn in a casserole dish, top it with the creamy mayo mixture, and chopped cilantro.
Mix it all together and bake for 20 minutes at 350°.
Serve this dish with additional cilantro and quartered lime slice for garnish.