Grilled Tilapia with Cajun Butter

Ingredients (11)

• 2 ears corn on the cob, cleaned and each ear cut into 6 rounds
• 1 large yellow onion, thinly sliced
• 1 red bell pepper, thinly sliced
• 4 cloves garlic, minced
• 3 tablespoons butter, melted
• 1 tablespoon cajun seasoning blend, divided
• 1 teaspoon salt, divided
• 1/2 teaspoon fresh ground black pepper, divided
• 4 tilapia filets, about 4 to 6 ounces each, thawed
• 1 tablespoon butter, cut into small cubes
• lemon slices, for serving