Catfish Fillet Sandwiches with Red 'Firecracker' Sauce Recipe from USA

Ingredients

• 4 x 4- to 5- ounce frozen U.S. farm-raised catfish fillets
• 1 tsp dried oregano
• salt and freshly ground black pepper
• 4 tsp olive oil
• 2 tbsp lime or lemon juice
• 2 tsp dijon mustard
• 1.5 tsp chili powder
• 1 tsp ground cumin
• 0.25 tsp cayenne pepper
• 0.13 tsp garlic powder
• 0.25 cup olive oil
• 4 soft sandwich rolls
• lettuce leaves, alfalfa sprouts or coleslaw
• 8 slices ripe avocado
• 4 thin slices red onion
• 4 tsp sour cream or plain yogurt