Begin by preheating your oven to 400°F. While it heats, toss the cubed sweet potatoes in a bowl with olive oil, garlic powder, minced rosemary, smoked paprika, salt, and pepper until evenly coated. Spread them in a single layer on a baking sheet and place in the oven for 18-20 minutes, stirring halfway through, until golden and tender. Meanwhile, measure out the brown rice, halve the cherry tomatoes, and mince the fresh basil. Having everything prepped before the potatoes finish cooking will make final assembly seamless.
In a small saucepan, cook the brown rice according to package directions (typically about 30-40 minutes). Start this early since it will cook simultaneously with your sweet potatoes and salmon. Once cooked, set aside and keep warm until ready to assemble.
While the potatoes roast and rice cooks, cook the salmon to your preferred doneness—I recommend pan-searing it skin-side down in a hot skillet with a touch of olive oil for about 4-5 minutes per side for medium doneness, which keeps it moist and flavorful. Season with a pinch of salt and pepper. Once cooked, set aside and break into bite-sized pieces when ready to assemble.
Place the arugula in a serving bowl as your fresh, peppery foundation. Add the warm roasted sweet potatoes from Step 1 and the cooked brown rice from Step 2 to the greens. The warmth of the potatoes and rice will gently wilt the arugula slightly while maintaining its character.
Top the salad with the cooked salmon from Step 3, corn, and halved cherry tomatoes. I find it's best to add the goat cheese last and right before serving—crumbling the cold cheese directly over the warm salad creates a wonderful textural contrast that adds richness without overwhelming the dish.
Sprinkle the minced fresh basil over the top of the salad, then drizzle generously with the chimichurri sauce. Toss everything together gently just before eating to distribute the vibrant herbaceous flavors throughout. The chimichurri ties all the components together with its bright, assertive character.