Cut the avocados in half, remove the pits, and scoop the flesh into a mixing bowl.
Mash the avocados with a fork or potato masher until they reach your desired consistency
Add the diced onion, diced tomatoes, minced garlic, and lime juice to the mashed avocados. Mix everything together.
If you like a little heat, you can finely chop a small amount of jalapeño and add it to the mixture. Adjust the amount to your desired spiciness.
Season the guacamole with salt, pepper, and cumin. Stir well to combine all the ingredients.
Taste the guacamole and adjust the seasoning or lime juice to your preference.
If you like cilantro, add the chopped cilantro and gently fold it into the guacamole.
Enjoy your homemade guacamole!