Bistro Beef & Jack Sandwich

Ingredients

• 0.5 cup baby spinach leaves loosely packed
• 4 tsp balsamic vinaigrette dressing divided kraft
• 2  big colby jack cheese kraft
• 1 tsp grey poupon dijon mustard 
• 6  mushrooms fresh sliced
• 1 Tbsp mayo homestyle real mayonnaise kraft
• 4 slices multi-grain bread toasted
• 1 small onion red separated sliced
• 0.3 lb pan drippings from roast beef preferably sliced

Equipment

• frying pan

Directions

1. Combine onions and 1 Tbsp. dressing; let stand 10 min.
2. Meanwhile, cook mushrooms in remaining dressing in skillet on medium-high heat 10 min. or until tender.
3. Spread toast slices with mayo, then mustard. Fill with spinach, onions, meat, mushrooms and cheese to make 2 sandwiches.