Cut the avocados in half lengthwise and remove the pits. Using a spoon, scoop out the avocado from the skins into a mixing bowl.
Use a fork to smash the avocados, leaving some small chunks.
Add the tomatoes, red onion, cilantro, lime juice, salt, and pepper, and mix well. (If you would like a little spicy heat add the crushed red pepper in this step as well.)
Serve immediately or chill for 1 hour. Garnish with fresh cilantro.
Here's some tips to help you select the perfect avocados:
Store them in the fridge to keep them from ripening too fast. They'll keep for a week or more. Don't forget, you can also freeze them! Be sure to remove the pit and place in a sealed bag. They will last 3-6 months in the freezer.