In a small bowl, mash the avocado, add about 1/2 tsp of salt, and a splash of lime juice. Make sure to taste during this step, more/less lime and salt may be needed.
"Butter" your toast with coconut oil and sprinkle on a dash of salt and a dash of pepper. Plot on 1/2 of the avocado mash on each piece of toast, and then top with a few slices of tomato. Sprinkle a small amount of salt over the top, and place both pieces of bread on a baking sheet.
Place in the oven on broil for 5-10 minutes, checking regularly. I have learned my lesson the hard way many times, when using broil it can burn quickly. Once the tomatoes begin to "shrivel up" its ready to take out and enjoy!
I've made this for breakfast before but its also great for lunch or just an afternoon snack!