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Sirloin, Mushroom & Zucchini Flatbreads

Sirloin, Mushroom & Zucchini Flatbreads

with White Sauce, Mozzarella & Grape Tomatoes
Recipe Development Team
Recipe Development TeamUpdated on April 08, 2026
Get Free Steak + 10 Free Meals
Calories
1030 kcal
Protein
54g protein
Total
40 minutes
Difficulty
Medium
Allergens:
  • Sesame
  • Wheat
  • Milk
  • Soy
  • May contain traces of allergens
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.
Serving amount

12 ounce

Sirloin Steak

2 unit

Flatbreads

(Contains: Sesame, Wheat May be present: Soy)

1 unit

Zucchini

4 ounce

Button Mushrooms

4 tablespoon

Cream Cheese

(Contains: Milk)

½ cup

Mozzarella Cheese

(Contains: Milk)

1 clove

Garlic

1 tablespoon

Italian Seasoning

4 ounce

Grape Tomatoes

¼ ounce

Chives

1 teaspoon

Chili Flakes

1 tablespoon

Flour

(Contains: Wheat)

1 teaspoon

Garlic Powder

Not included in your delivery

1 tablespoon (tbsp)

Olive Oil

1 tablespoon (tbsp)

Cooking Oil

1 tablespoon (tbsp)

Butter

(Contains: Milk)

teaspoon (tsp)

Salt

teaspoon (tsp)

Black Pepper

/ per serving
Calories1030 kcal
Fat62 g
Saturated Fat22 g
Carbohydrate66 g
Sugar11 g
Dietary Fiber5 g
Protein54 g
Cholesterol180 mg
Sodium980 mg
Trans Fat0.5 g
Potassium1270 mg
Calcium350 mg
Iron5.8 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.

Cooking Steps

Prep
1
  • Adjust rack to top position (top and middle positions for 4 servings) and preheat oven to 450 degrees. Wash and dry produce.

  • Trim and halve zucchini lengthwise; slice crosswise into ½-inch-thick half-moons. Peel garlic and place in the center of a small piece of foil; drizzle with olive oil and season with salt and pepper. Cinch into a packet. Trim and slice mushrooms into ¼-inch-thick pieces (skip if your mushrooms are pre-sliced!). Halve tomatoes lengthwise. Mince chives.

Roast & Marinate
2
  • Toss zucchini on a baking sheet with a drizzle of olive oil, 1 tsp Italian Seasoning (2 tsp for 4 servings), salt, and pepper. Place garlic foil packet on same sheet.

  • Roast on top rack, tossing halfway through, until zucchini is browned and tender, 14-16 minutes.

  • Meanwhile, place tomatoes in a medium bowl; toss with 1 tsp Italian Seasoning (2 tsp for 4 servings), a drizzle of olive oil, salt, and pepper. (You’ll use the rest of the Italian Seasoning later.) Set aside to marinate.

Cook Mushrooms
3
  • Heat a drizzle of oil in a large pan over medium-high heat. Add mushrooms; cook, stirring occasionally, until browned and slightly crispy, 5-7 minutes. Season with salt and pepper. Turn off heat; transfer to a paper-towel-lined plate. Wash out pan.

Toast Flatbreads
4
  • Once zucchini is tender, transfer to bowl with tomatoes; toss to combine.

  • Leaving garlic foil packet on sheet, carefully wipe off any excess oil. Place flatbreads on same sheet. (For 4 servings, divide between 2 baking sheets; toast on top and middle racks, swapping rack positions halfway through toasting.)

  • Return to top rack until flatbreads are lightly toasted and garlic is softened, 5-7 minutes.

Make White Sauce
5
  • While flatbreads toast, melt 1 TBSP butter (2 TBSP for 4 servings) in pan used for mushrooms over medium-high heat. Add flour, garlic powder, and remaining Italian Seasoning. Whisk constantly until lightly browned, 30 seconds.

  • Reduce heat to medium low and whisk in cream cheese and ½ cup water (1 cup for 4) until melted and combined. Season generously with salt and pepper. Simmer until thickened, 1-2 minutes. Remove pan from heat.

Assemble Flatbreads
6
  • Once roasted garlic is done, carefully transfer to a cutting board and roughly chop.

  • Heat broiler to high.

  • Evenly top flatbreads with sauce, roasted garlic, mushrooms, and veggies. Sprinkle with mozzarella.

Finish & Serve
7
  • Broil flatbreads until cheese melts, 1-2 minutes. (For 4 servings, broil in batches.) TIP: Watch carefully to avoid burning.

  • Slice flatbreads into pieces; sprinkle with chives and chili flakes to taste. Divide between plates and serve.