A twist-lock mounting system for lighting fixtures includes a mounting plate and a canopy cover. The mounting plate that is secured to a junction box includes a plate body, a first wing, and a second wing. The canopy cover that encloses the electrical wire and electrical connections includes a cover body and a track channel. The first wing and the second wing are laterally connected to the plate body. The first wing is diametrically opposed to the second wing about the plate body. The track channel is perimetrically connected around the cover body. The first wing and the second wing are inserted into the track channel via a pair of access gaps and slidably engaged within the track channel. As a result, the track channel and the cover body are able to enclose the plate body, the first wing, and the second wing.