Stroganoff-Style Burgers - Sutter Home Family Vineyards

Ingredients

• 1 pound lean ground beef
• 1/2 cup noodles from a 3-oz. pkg. beef flavored ramen noodles, crushed, plus beef seasoning packet
• 1 egg
• 1/4 teaspoon salt
• 1/8 teaspoon black pepper
• vegetable oil for brushing the grill rack
• 1 (3-oz.) can mushroom stems and pieces, drained
• 1 (12-oz.) jar homestyle gravy
• 1/2 cup sour cream
• 6 kaiser rolls, split
• 6 lettuce leaves
• 6 thin-sliced, red onion slices