Spinach-Walnut Stuffed Chicken

I'm drawing from my "reserves" to post these days since gracious friends are still bringing us meals after having a baby girl (who was 7 months along in the above photo!) and I'm not cooking as much. This is something I made a while back, but didn't post because the recipe was going to be part of a surprise gift for a faithful "Let's Eat" reader. And then I forgot about it. You don't care. What you do care about is knowing that it's delicious! The flavor combination was just strong enough without overdoing it. Thank you for sharing the recipe, Kenan!

1/2 c finely chopped onion

1/2 c finely chopped mushroom

1/4 c finely chopped celery

2 garlic cloves, minced

2-1/2 tsp olive oil

1 pkg frozen chopped spinach, thawed and squeezed dry (I used baby spinach that I had on hand and just sauteed it with the other stuff)

1/4 c crumbled gorgonzola cheese

4 boneless skinless chicken breast

1/4 tsp salt

1/4 tsp pepper

1 egg white

1/4 c ground walnuts

Saute onion, mushroom, celery and garlic in oil until tender.

Stir in spinach and cheese, remove from heat.

Cut lengthwise slits in thickest part of chicken, fill with mixture, sprinkle with salt and pepper.

Place egg white and walnuts in separate bowls, dip one side of chicken in egg white, then in walnuts.

Place in 11 X 17 baking dish coated with cooking spray and bake uncovered at 350 for 25-30 minutes.