Mexican Fiesta Side Dish

About a month ago, we were having burritos for dinner and I wanted something other than refried beans for a side dish.  I love black bean salsa so I tweaked the recipe a little and came up with this great side dish that is super easy to prepare and tastes good without tortilla chips. . 

Mexican Fiesta Side Dish
1 can (15 oz) Black Beans, drained and rinsed
1 can (15.25 oz) Whole Kernel Corn, drained
1 can Original Rotel, drained
1/2 tsp. Salt (or more to taste)
1/2 tsp. Onion Powder
1/2 tsp. Garlic Powder
Sour Cream
Shredded Parmesan Cheese
Finely chopped Walnuts

Combine first 6 ingredients in a medium size bowl.  Stir together and add additional salt if desired.  Garnish each 1/2 cup serving with a dallop of sour cream on top and sprinkle with parmesan cheese and walnuts (about 1 Tablespoon of each).  Enjoy!