Rinse the shrimp and salmon under cold water. Pat dry and season with Cajun seasoning. Let sit for 10 minutes.

Heat a skillet over medium-high heat, add olive oil, and cook shrimp for 2-3 minutes until pink. Add salmon and cook for 4-5 minutes until flaked easily.

In the skillet, lower heat, add minced garlic, sauté for 1 minute, then pour in cream and additional seasoning. Simmer for 3-5 minutes.

Boil cubed potatoes in salted water for 15-20 minutes until tender. Drain, mash with butter and cream, and season to taste.

In another pan, sauté green beans in butter for 5-7 minutes until tender but crisp.

Serve mashed potatoes topped with shrimp and salmon, drizzled with garlic cream sauce, and green beans on the side.