2 teaspoons paprika
1 teaspoon salt, divided
1/2 teaspoon ground cumin
1/2 teaspoon ground coriander
1/4 teaspoon ground turmeric
3 tablespoons extra-virgin olive oil
1 tablespoon minced garlic
1 tablespoon lime juice
2 14-ounce packages extra-firm or firm water-packed tofu, drained
2/3 cup nonfat plain yogurt
6 tablespoons sliced scallions or chopped fresh cilantro for garnish
Preheat grill to medium-high.
Combine paprika, 1/2 teaspoon salt, cumin, coriander and turmeric in a small bowl. Heat oil in a small skillet over medium heat. Add garlic, lime juice and the spice mixture; cook, stirring, until sizzling and fragrant, about 1 minute. Remove from the heat.
Slice each tofu block crosswise into 6 slices; pat dry. Use about 3 tablespoons of the spiced oil to brush both sides of the tofu slices; sprinkle with the remaining 1/2 teaspoon salt. (Reserve the remaining spiced oil.)
Oil the grill rack. Grill the tofu until it has grill marks and is heated through, 2 to 3 minutes per side.
Combine yogurt with the reserved spiced oil in a small bowl. Serve the grilled tofu with the yogurt sauce, garnished with scallions (or cilantro), if desired.