Step 1

Toss radishes and vinegar in a small bowl to combine; set aside.

Step 2

Preheat oven to 400°. Heat 2 Tbsp. oil in a large skillet over medium-high. Cook garlic, tossing often, until golden around edges, about 2 minutes. Add cauliflower; cook, undisturbed, until golden brown underneath, about 3 minutes. Toss, then continue to cook, tossing occasionally, until browned all over and crisp-tender, about 3 minutes more. Add coriander, cumin, paprika, and remaining 1 Tbsp. oil. Cook, tossing, until very fragrant, about 1 minute; season with salt.

Step 3

Spread half of chips on a small rimmed baking sheet. Arrange half of cauliflower on top. Dollop half of beans over, then sprinkle with half of cheese. Repeat layers one more time. Bake until cheese is melted, 10–12 minutes. Top with drained radishes, avocado, cilantro, and yogurt.