Add olive oil to a large stove-top skillet.
Heat oil on medium high until it starts to smoke.
Add brussels sprouts, cut side down and cook them for 3-5 minutes until they start to brown.
Flip the spouts over and cook the other side for 3-5 minutes until they start to brown.
Add the sweet and sours sauce and let them cook another 3-5 minutes until they caramelize.
Romove them from the heat and toss with the toasted pecans.