In a medium frying pan, toast the pecans over medium heat until they start to smell fragrant. Now pour in the maple syrup and stir to coat all the pecans. Keep stirring them until they start to stick together. Now transfer them to a piece of parchment paper, spread them out and let the pecans cool until you have the rest of the salad ready.
Salad Dressing
Whisk together the oil, balsamic vinegar, dijon, maple syrup, and garlic clove. Add in a pinch of salt and pepper and taste. Adjust if needed.
Salad
In a large bowl, toss together the romain lettuce and arugula. Pour the dressing on the greens and toss the salad until all the greens are coated.
Sprinkle on the grapes and lightly toss so they don't all fall to the bottom. Now sprinkle on the feta cheese and the candied pecans. Serve immediately .
Notes
You can substitute red wine vinegar or apple cider vinegar in the dressing if needed. Don't dress the salad if it's not being served immediately. Only add dressing and pecans once ready to serve otherwise the pecans will go soft and the salad will get soggy.