I start by washing all the berries and arugula gently. Then I dice the avocado and thinly slice the cucumber. Keeping everything similarly sized helps with even mixing.
In a small bowl, I whisk together olive oil, lime juice, maple syrup, chopped mint, salt, and pepper. The fresh lime and mint really lift the flavors. Taste and adjust seasoning before tossing.
I place arugula, berries, avocado, cucumber, feta, and hazelnuts into a large bowl. Pour the vinaigrette over everything and toss gently so the avocado doesn’t mash. Serve immediately for best texture.