Cook the Rice: Rinse jasmine rice until water runs clear. Combine rice, water or broth, and salt in a pot. Bring to a boil, reduce heat to low, cover, and simmer for 15 minutes. Remove from heat and let sit covered for 5 minutes, then fluff.
Roast the Broccolini: Preheat oven to 400°F. Toss broccolini with olive oil, salt, and pepper. Spread on a baking sheet and roast for 12–15 minutes until tender-crisp.
Make the Crab Stuffing: In a bowl, mix crab meat, cream cheese, mayonnaise, parmesan, green onion, Cajun seasoning, and lemon juice until combined.
Prepare the Salmon: Pat salmon dry. Carefully cut a slit lengthwise in each fillet to create a pocket. Stuff each fillet with crab mixture.
Cook the Salmon: Brush salmon with olive oil and season generously with Cajun seasoning. Heat a skillet over medium-high heat and sear salmon skin-side down for 3–4 minutes. Flip gently, then transfer to the oven and bake at 400°F for 8–10 minutes until cooked through.
Assemble the Plate: Serve salmon over jasmine rice with roasted broccolini on the side. Garnish with lemon wedges and fresh parsley.