Heat a dry skillet over medium heat and add the almonds, stirring frequently for 4-6 minutes until fragrant and lightly golden. This brings out their nutty flavor and adds crucial texture to the salad. Transfer to a plate to cool slightly, then roughly chop them into bite-sized pieces.

While the almonds toast, prepare all your salad components. Thinly slice the red onion across the grain and place in a small bowl with a pinch of salt—this softens the bite slightly and lets the flavors meld. Pat the drained mandarin oranges dry with paper towels to remove excess moisture, which would otherwise dilute your dressing and make the salad soggy. Crumble the goat cheese into bite-sized pieces and measure out the dried cranberries.

In a small bowl or jar, whisk together the Dijon mustard, honey, and balsamic vinegar until well combined. The mustard acts as an emulsifier, helping the vinegar and oil blend together smoothly. Slowly drizzle in the olive oil while whisking constantly—this gradual incorporation creates a properly emulsified dressing that clings to the leaves rather than pooling at the bottom. Taste and adjust seasoning with salt and pepper to your preference. I find that a touch more salt than you'd expect brings out all the flavors beautifully.

Place the baby spinach in a large bowl and add the toasted almonds from Step 1, the prepared red onion, mandarin oranges, goat cheese, and dried cranberries from Step 2. Drizzle the dressing from Step 3 over the salad and toss gently but thoroughly, making sure every leaf gets coated. I like to use my hands for this final toss—it's gentler on the delicate greens and gives you better control. Serve immediately while the spinach is still crisp and the goat cheese is cold.