How to Make It
Place potatoes and 2 teaspoons water in a microwave-safe dish; cover with plastic wrap. Microwave at high until tender, about 4 minutes. Place potatoes on a paper towel–lined plate. Let stand 5 minutes.
Heat 1 teaspoon oil in a cast-iron skillet over medium-high. Add potatoes, bell pepper, chili powder, salt, and cumin; cook until potatoes are crisp, 6 to 8 minutes. Stir in black beans; transfer to a plate.
Reduce heat to medium. Add remaining 1/2 teaspoon oil to pan. Crack egg into pan; cook until whites are set, 3 to 4 minutes. Place egg on potato mixture. Top with Green Goddess Sauce and cilantro.