Add tomatoes, garlic, basil, olive oil, and balsamic vinegar to a resealable container. Toss and refrigerate at least 1 hour before serving.
Pre-heat oven to 375 degrees. Line a baking sheet with aluminum foil and set aside.
Place thawed cod fillets on baking sheet and season with Oh My Spice! seasoning. Bake for 15 minutes or until fish flakes apart easily with a fork.
If desired, steam broccolini in the microwave covered with a damp paper towel for 1-2 minutes. Then melt butter in a large skillet over medium-high heat. Add broccolini and sauté until cooked through and tender-crisp.