Cut the tomatoes in half crosswise and using a metal measuring spoon (the regular spoons have sharp edges), hollow them out, leaving a wall about ¼” thick.
Arrange the tomatoes on a baking tray, hollow side up. I like to sprinkle some additional salt and fresh ground pepper at this point in the cavity of the tomatoes. Place them in a 180° oven for 10-15 minutes, just long enough to warm them through.
Heat the butter in a medium saucepan. When is hot, add the peas, sugar, salt and pepper. Cook for about 2 minutes, then add the lime zest and the juice, toss to mix well and spoon the peas into the tomatoes cups.
Giangi's Kitchen provides nutritional information, but these figures should be considered estimates, as a registered dietician does not calculate them.