Heat olive oil in a large skillet over medium heat. Add diced onions and minced garlic, sauté for 3-4 minutes until translucent.

Add roasted red peppers and blend until smooth and creamy with immersion blender.

Season cod fillets with salt and pepper on both sides, then gently place them in the skillet, ensuring they are nestled in the sauce.

Cover and simmer on low for 10-15 minutes until the fish is opaque and flakes easily with a fork.

If sauce thickens too much, add a splash of broth or water. Adjust to maintain a smooth consistency.

Carefully transfer cooked cod to plates, spooning extra sauce over. Garnish with paprika, and serve with sides like rice or roasted vegetables.