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Chicken Spinach Sandwich

This Chicken Spinach Sandwich has tender juicy Italian seasoned chicken combined with fresh baby spinach leaves, sweet red onion sauce, provolone cheese, and garlic mayonnaise sauce on a deli sandwich roll.

Also known as Chicken Florentine Sandwiches, this recipe is easy and quick, ready in about 30 minutes. These sandwiches make a great lunch, dinner or romantic date night meal for 2.

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Grilled Chicken Sandwich on a baking sheet.
Grilled Chicken Sandwich

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How to make Chicken Spinach Sandwiches

Pre-heat the oven to 375 degrees F.

Slice the red onion into rings.

Heat the olive oil in small saucepan over medium-high heat until hot.

Add the red onion and cook about 5 minutes or until crisp-tender, stirring often

Stir in the sugar and apple cider vinegar to the saucepan. Reduce the heat to low and cook 5-10 minutes or until most of liquid has evaporated, stirring occasionally.

red onions sliced into rings cooking in a pan for Chicken Spinach Sandwiches.

Pound the chicken cutlets flat between two pieces of plastic wrap.

Sprinkle both sides with Italian seasoning.

two chicken breasts flattened and seasoned with Italian seasoning.

Grill or pan fry the chicken about 5 minutes on each side, or until browned and juices run clear. (If pan frying, drain off any excess liquid.)

two chicken breasts cooking on a grill.

In a small bowl, combine the mayonnaise and minced garlic.

garlic mayo for Chicken Spinach Sandwiches whisked together in a bowl.

Line a small baking sheet pan with parchment paper.

Place the two sandwich buns, open faced, onto the sheet pan.

Spread each sandwich roll with the mayonnaise mixture.

Layer each sandwich roll bottom with baby spinach leaves, followed by the cooked chicken,  the red onion sauce mixture,  the provolone cheese slices, and the top halves of the buns.

Bake 5 minutes in the pre-heated oven.

Chicken Mayo Sandwich on a tray.
Chicken Mayo Sandwich

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a close up front view of a Chicken Spinach Sandwich

Chicken Spinach Sandwich

This Chicken Spinach Sandwich has tender juicy Italian seasoned chicken combined with fresh baby spinach leaves, sweet red onion sauce, provolone cheese, and garlic mayonnaise sauce on a deli sandwich roll. Ready in 30 minutes!
5 from 5 votes
Prep Time 5 minutes
Cook Time 25 minutes
Total Time 30 minutes
Course Chicken-Poultry
Cuisine American
Servings 2
Calories 530 kcal

Ingredients

  • ½ of a red onion
  • ½ Tbsp olive oil
  • 1 Tbsp sugar
  • 1 Tbsp apple cider vinegar
  • 2 boneless skinless chicken cutlets (4 to 6 oz each)
  • ¼ tsp dried Italian seasoning
  • 2 sandwich rolls (or buns)
  • cup mayonnaise
  • 1 tsp minced garlic (from a jar)
  • ½ cup fresh baby spinach leaves
  • 2 slices provolone cheese

Instructions
 

  • Pre-heat the oven to 375 degrees F.
  • Slice the red onion into rings.
  • Heat the olive oil in small saucepan over medium-high heat until hot.
  • Add the red onion and cook about 5 minutes or until crisp-tender, stirring often
  • Stir in the sugar and apple cider vinegar to the saucepan. Reduce the heat to low and cook 5-10 minutes or until most of liquid has evaporated, stirring occasionally.
  • Pound the chicken cutlets flat between two pieces of plastic wrap.
  • Sprinkle both sides with Italian seasoning.
  • Grill or pan fry the chicken about 5 minutes on each side, or until browned and juices run clear. (If pan frying, drain off any excess liquid.)
  • In a small bowl, combine the mayonnaise and minced garlic.
  • Line a small baking sheet pan with parchment paper.
  • Place the two sandwich buns, open faced, onto the sheet pan.
  • Spread each sandwich roll with the mayonnaise mixture.
  • Layer each sandwich roll bottom with baby spinach leaves, followed by the cooked chicken,  the red onion sauce mixture,  the provolone cheese slices, and the top halves of the buns.
  • Bake 5 minutes in the pre-heated oven.

Video

Nutrition

Serving: 1Calories: 530kcalCarbohydrates: 40gProtein: 35gFat: 25gSaturated Fat: 6gPolyunsaturated Fat: 8gMonounsaturated Fat: 8gTrans Fat: 0.04gCholesterol: 91mgSodium: 676mgPotassium: 609mgFiber: 2gSugar: 8gVitamin A: 919IUVitamin C: 6mgCalcium: 227mgIron: 3mg
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Chicken Cheese Sandwich on a tray.
Chicken Cheese Sandwich
Chicken Mayo Sandwiches on plates.
Chicken Mayo Sandwiches
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