Basic Mexican Rice

2 Tablespoons Canola Oil 1/2 whole Large Onion, Chopped 2 cups Long Grain Rice 3 cloves Garlic, Minced 1 can Rotel Diced Green Chilies And Tomatoes (10 Ounce Can) 1 can (14 1/2 oz. size) Whole Tomatoes 2 cups Low Sodium Chicken Broth (more If Needed) 1 teaspoon Cumin (more To Taste) 1 teaspoon Kosher Salt Fresh Cilantro, Chopped