---
title: Sirloin Steak Sandwiches & Onion Rings
source:
  name: HelloFresh
  url: https://www.hellofresh.com/recipes/sirloin-steak-sandwiches-and-onion-rings-68e5118dd6d3e8af9dd05fc7
servings: 2
prep time: 10 minutes
cook time: 25 minutes
time required: 35 minutes
difficulty: Medium
allergens:
  - Milk
  - Wheat
  - Soy
  - Eggs
tags:
  - Easy Prep
  - New
  - Seasonal
  - American
  - Comfort Food
rating: 4.0
rating_count: 241
source_chef: Courtney Laga
review_highlights:
  - theme: Flavor
    text: Many loved the seasoning and sauces, especially the aioli
  - theme: Ease of prep
    text: Time-consuming to fry onion rings but effort was worthwhile
image: "https://images.recipes.furrysalamander.com/sirloin-steak-sandwiches-onion-rings.avif"
---
Adjust rack to top position and preheat oven to 425 degrees F. Wash and dry all produce.

In a #small bowl{}, combine @smoky mustard{1%tbsp}, @mayonnaise{1%tbsp}, @crème fraîche{2%tbsp}, and half the @chives{2%tbsp}.

Pat @sirloin steak{12%oz} dry with a paper towel and season all over with @brown sugar bourbon seasoning{1%tsp}. Place on a #baking sheet{} and roast until desired doneness ~{20%minutes}.

While steak roasts, in a #large bowl{}, combine @tempura batter mix{½%cup}, ⅓ cup cold water, and @salt{½%tsp}. Whisk until smooth. If mixture seems too thick, add water 1 tbsp at a time until it reaches a pancake-batter-like consistency.

Slice @onion{1%large} into ½-inch thick rings and separate. Heat a ⅓-inch layer of @cooking oil{1%cup} in a #large pan{} over medium-high heat.

Dip onion rings into batter and carefully place in hot oil. Fry until golden and crisp ~{3%minutes} per side. Remove with a #slotted spoon{} and drain on a paper towel. Season immediately with salt.

Halve @ciabatta{2%rolls} and toast until golden. Spread mustard aioli on both halves. Layer with sliced steak and onion rings.

Divide @baby lettuce{1%head} into wedges. Drizzle with @blue cheese dressing{¼%cup}. Top with @blue cheese{2%oz}, @tomato{1%large} slices, crushed @croutons{1%cup}, and remaining chives. Serve with sandwiches and any leftover onion rings on the side.