Make the dressing: In a small bowl or jar, whisk together 4 tbsp olive oil, 2 tbsp apple cider vinegar, 1 tbsp honey, 1 tsp Dijon mustard, 1/2 tsp poppy seeds, 1/4 tsp salt and a pinch of freshly ground black pepper until smooth and creamy. Leave to one side.
Prepare the salad: In a large bowl, gently toss 140 g baby spinach leaves with 150 g sliced strawberries, 75 g blueberries and 60 g raspberries.
Add the toppings: Scatter 30 g crumbled goat's cheese and 30 g chopped pecans evenly over the salad.
Dress and serve: Just before serving, pour the dressing over the salad and toss lightly to coat. Serve immediately.