Preheat your oven to 350°F (175°C). Line a rimmed baking sheet with parchment paper.
To make the candied pecans, melt the butter in a small skillet over medium heat. Stir in the brown sugar, 1/2 teaspoon of salt, and water until the sugar has dissolved completely.
Add the pecan halves to the skillet. Cook for about 3 minutes, stirring constantly to coat the nuts evenly. Watch carefully to ensure the sugar does not burn.
Remove the skillet from the heat and stir in the cinnamon. Spread the pecans in a single layer on the prepared baking sheet and bake for 5 minutes.
Let the pecans cool completely on the baking sheet. They will become hard and crunchy as they cool down.
While the pecans cool, prepare the vinaigrette. In a medium bowl or a jar with a lid, combine the olive oil, apple cider vinegar, white vinegar, lime juice, and pineapple juice.
Add the honey, 1 teaspoon of salt, black pepper, and garlic powder. Whisk or shake vigorously until the dressing is well combined.
In a large salad bowl, combine the spring mix, sliced apples, crumbled blue cheese, and dried cranberries.
Add the cooled candied pecans to the bowl. Drizzle with about half of the vinaigrette and toss gently to coat. Add more dressing if desired and serve immediately.