Cornbread & Beef Skillet Pie

Ingredients

• 1/2 cup yellow cornmeal
• 1/2 cup all-purpose flour, plus
• 2 tablespoons all-purpose flour (spooned and leveled)
• 1 teaspoon baking soda
• coarse salt and pepper
• 1 tablespoon olive oil
• 2 red bell peppers, thinly sliced (ribs and seeds removed)
• 1 medium red onion, chopped
• 1 (10 ounce) package white mushrooms, trimmed and thinly sliced
• 1 1/2 lbs ground sirloin
• 1/4 cup tomato paste
• 3/4 cup reduced-fat sour cream
• 1 large egg, lightly beaten