PREPARE STEAK: Heat a grill pan or cast iron skillet over medium-high heat. Rub 3 ounces strip steak with 1 tablespoon extra virgin olive oil, then season with 1/2 teaspoon kosher salt and 1/4 teaspoon fresh ground black pepper. Cook for 2 to 3 minutes per side, until well browned and cooked to your desired doneness, about well done for the classic version.
REST AND SLICE: Remove the steak from heat and let it rest for 10 minutes. Cut into bite-size pieces.
MAKE DRESSING: Add 1/2 cup sour cream, 1/2 cup water, 2 tablespoons buttermilk powder, 1 ripe avocado, 1 teaspoon lemon juice, 1/4 fresh jalapeño, 1/2 teaspoon garlic salt, 1/4 teaspoon fresh ground black pepper, and 1 tablespoon chives or green onion to a blender or food processor. Blend until smooth and creamy.
WARM BASE: Warm 1 cup Mexican red rice and ½ cup black beans in the microwave or on the stovetop until heated through.
BUILD BOWL: Spoon the warm 1 cup Mexican red rice. Add 1/2 cup black beans and 1/4 cup cheddar cheese.
ADD VEGGIES: Arrange 1/2 cup romaine lettuce and 1/8 cup diced tomatoes in sections over the rice mixture. Drizzle with a few tablespoons of the avocado ranch dressing.
ADD STEAK AND TOPPINGS: Add the chopped steak, then top with 2 tablespoons guacamole and 2 tablespoons sour cream.
SERVE: Serve immediately while warm and fresh.
Notes
Make-Ahead: Cook the rice, beans, and steak up to 3 days ahead. Store separately and assemble fresh for best texture.Storage: Keep each component in separate airtight containers in the refrigerator for up to 4 days.Reheating: Warm the rice, beans, and steak in the microwave until hot. Add fresh toppings after reheating.Freezing: Freeze cooked steak and rice for up to 2 months. Do not freeze lettuce, sour cream, or dressing.Ingredient Notes: You can swap New York strip steak for flank steak or sirloin. If you prefer, substitute ½ cup buttermilk for the water and buttermilk powder in the dressing for a richer flavor.