Place olive oil into medium skillet or pot over medium heat. Saute onions and garlic until softened, about 5 minutes. Add ground beef, salt and pepper, stirring until browned. Add salsa verde and cumin, stirring until combined. Reduce heat to low until ready to serve.
You can place the beef mixture into a slow cooker and cook on low for 3-6 hours if desired.
Notes
Use Taco Meat Other Ways. Instead of tacos, try the taco meat over nachos, inside burritos, over rice and even more. It's so versatile.
Prepare Ahead. Make your taco meat a day in advance to save time for taco night.
Use Lean Ground Beef. To avoid lots of fat in the beef, use an 80% or higher ground beef.