Roasted Cauliflower Burrito Bowls

Name: Roasted Cauliflower Burrito Bowls
Ingredients: 1 cup white or brown rice; 1 head of cauliflower, chopped into florets; 1 tablespoon olive oil; 1 tablespoon taco seasoning, divided; 1 14-ounce can of black beans, rinsed and drained; 1/2 cup water; 2 tomatoes, chopped; half of a small onion, chopped; juice of 2 limes + more wedges for serving; 1/2 cup chopped fresh cilantro; 2 ears of corn, kernels cut off the cob; 1 avocado