Preheat oven to 400°; pat chicken dry + place on a lightly oiled sheet pan; divide 1 cup of sauce + 1/2 cup of cheese to the top of each chicken breast; bake 12-15 min until hot + melty

Meanwhile, heat 1 tbsp oil in skillet over med-high; add half the bag of broccoli, salt/pep + sauté 4-5 min until lightly browned; add 2 tbsp water, reduce heat, cover + steam 3-5 min more until tender

Divide chicken + broccoli to plates