Bistro Beef & Jack Sandwich

• 1 small red onion, sliced, separated into rings
• 4 tsp. KRAFT Balsamic Vinaigrette Dressing, divided
• 6 fresh mushrooms, sliced
• 4 slices multi-grain bread, toasted
• 1 Tbsp. KRAFT Mayo Homestyle Real Mayonnaise
• 1 tsp. GREY POUPON Dijon Mustard
• 1/2 cup loosely packed baby spinach leaves
• 1/4 lb. sliced roast beef
• 2 KRAFT Big Slice Colby Jack Cheese Slices

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

red onion, dressing, mushrooms, multigrain bread, mayonnaise, poupon, baby spinach leaves, beef

Taken from www.kraftrecipes.com/recipes/bistro-beef-jack-sandwich-129972.aspx (may not work)