Polenta with Tomato Mushroom Sauce

Ingredients

• 1/2 cup thinly sliced yellow onion
• 1 pkg (8 oz each) fresh sliced button mushrooms
• 1 pkg (6 oz each) baby spinach leaves
• 1/8 teaspoon ground black pepper
• 1 tube (16 oz each) prepared plain polenta, patted dry
• 3 tablespoons Pure Wesson® Canola Oil
• 1 can (14.5 oz each) Hunt's® Fire Roasted Diced Tomatoes, undrained
• 2 tablespoons balsamic vinegar
• 1 can (8 oz each) Hunt's® Tomato Sauce
• 1/8 teaspoon salt