Add the olive oil to a large skillet over medium heat.
Stir the minced onion into the olive oil and sauté 'til the onion is translucent, about 3-5 minutes.
Mix the ground beef together with the onion in the skillet and cook.
When the ground beef mixture is done, drain well.
Add the ground beef mixture, frozen green beans, crumbled bacon, salt, pepper, and water to the Instant Pot.
Give it all a good stir.
Place the lid on the Instant Pot, set the vent to "Sealed," and cook on Manual (or Pressure Cook) for 15 minutes. Allow the Instant Pot to naturally release.
Serve while warm and enjoy!