This is a great tangy dish that is so easy to make and is light, yet filling. The taste is flavorful and delicious!
Place beans in pot over medium heat. Gradually add milk, stirring constantly, until beans are warmed through. Mix tuna fish, tomatoes, jalapenos, and lime juice together in a bowl.
To assemble, spread beans over tostada shells. Top with tuna mixture, lettuce, and avocado, and enjoy!
Per Serving: 336 calories; protein 25.4g; carbohydrates 36.1g; fat 10.9g; cholesterol 20.5mg; sodium 1011.1mg.