Black Bean, Tomato and Corn Tostadas

Fresh lime juice

3 tbsp(s), (45 ml)

Extra virgin olive oil

1 tsp(s), (5 ml)

Ground cumin

1 tsp(s), (5 ml)

Table salt

¼ tsp(s), (1 ml)

Canned black beans

1 cup(s), (250 ml), rinsed and drained

Grape tomatoes

½ cup(s), (125 ml), halved

Frozen corn

¼ cup(s), (60 ml), thawed

Serrano chile

¼ cup(s), (60 ml) (or any other green chile), canned

Red onion

2 tbsp(s), chopped, (30 ml), minced

Cilantro

2 tbsp(s), (30 ml)

Garlic

1 clove(s), large, , minced

Corn tortilla

4 item(s), (15-cm [6-inch]), toasted