Chicken and Black Bean Tostadas with Avocado Cream Sauce

From: http://www.2teaspoons.com/chicken-black-bean-tostadas-avocado-cream-sauce/

INGREDIENTS
CHICKEN
1 lb boneless, skinless chicken breast, cut into small bite sized pieces
2 tablespoons olive oil
¼ cup flour
1 teaspoon cumin
1 teaspoon chili powder
¼ teaspoon salt
¼ teaspoon pepper
optional: ¼ teaspoon garlic powder
optional: ¼ teaspoon paprika

BEANS
3.5 cups of black beans (2 cans drained)
1 tablespoon butter
½ teaspoon cumin
½ teaspoon garlic powder
½ teaspoon salt

AVOCADO CREAM SAUCE
1 ripe Hass avocado
½ -1 jalapeño, diced and seeded*
½ cup plain greek yogurt or sour cream
juice of 1 lime
1 tablespoon chopped fresh cilantro or 1 teaspoon dried cilantro
¼ teaspoon salt
splash of milk
TOSTADAS
8 corn tortillas
Olive oil for brushing tortillas
1.5-2 cups of shredded cheese
4 medium tomatoes, diced
4-6 leafs of romaine lettuce, chopped
½ red onion, diced
fresh cilantro or parsley, chopped
optional: limes for garnish

INSTRUCTIONS
Chicken: Mix flour and spices in a bowl and toss with chicken pieces. Heat olive oil in a (preferably cast iron) skillet over medium heat. Sauté chicken until fully cooked stirring occasionally, about 10 minutes. Remove from heat and set aside.

Beans: Heat butter in a skillet over medium-low heat. Mix beans with spices and add them to the skillet. Stir and mash beans while they are heating in the skillet. Once the beans are heated throughout remove from heat and set aside.

Avocado cream sauce: Blend all ingredients except milk until smooth. Stir in milk until sauce reaches desired consistency (I used just a splash).

Tortillas: Tortillas are best served right from the oven so while tortillas are baking make sure all toppings are ready for assembly. Preheat oven to 350 degrees. Brush both sides of tortillas with olive oil. Arrange in a single layer on a baking sheet. Bake for 5 minutes, flip, and bake for additional 3 minutes. Once tortillas are done baking, sprinkle with salt and begin to assemble tostadas right away.

Assembly: Divide each ingredient equally between the 8 tostadas. Spread a layer of black beans on each tortilla. Sprinkle each with chicken, cheese, lettuce, tomato, red onion, and cilantro (or parsley). Drizzle with avocado cream sauce and dive in! :-)
NOTES
*for slightly spicy sauce use ½ jalapeño, for a spicier sauce use the whole jalapeño