This is one of my favorite exercises to build glute and hamstrings with very minimal quadricep activation. Don’t be afraid to go HEAVY on these but be sure you keep an eye on range of motion.
Set yourself up in a wide, sumo stance, toes turned out about 45 degrees. Keep your core braced tight to support your lower back, keep your shoulder blades set down in towards your spine and drive the movement out of your heels by pushing through the floor!