In a large nonstick skillet over low heat, melt the ricotta and cream cheeses. Add the shrimp, tomato, onion, chiles, garlic and salt; cook, stirring as needed, until heated through, 4 to 5 minutes. Transfer to a serving bowl and serve at once with the toast.
Per Serving: 143 Calories, 3 g Total Fat, 1 g Saturated Fat, 62 mg Cholesterol, 368 mg Sodium, 17 g Total Carbohydrate, 2 g Dietary Fiber, 12 g Protein, 113 mg Calcium.