Heat a large skillet over medium-high heat until just before smoking.
Add the tomatoes to the dry pan and cook, turning every 1 minute until charred on all sides yet still holding their shape. Cook time will total 3 to 4 minutes.
Add the onions and pour in the balsamic vinegar.
Stir in the sugar and stir until it is dissolved.
Cook, stirring often until the onions soften and the vinegar thickens about 3 to 5 minutes.
Pour into a serving bowl.
Season with sea salt, drizzle olive oil, and sprinkle basil and green onions over the top.
Notes
Substitute cilantro for the basil to turn this dish into a Mexican inspired side. Recipe from Paula @CallMePMc.com All images and content are copyright protected. Please do not use my images without prior permission that includes copying the ingredient list or entire recipe and posting in the comments on Pinterest for Facebook. If you want to share this recipe, please simply link back to this post for the recipe.