Ingredients
Method
Prep Your Beef:
- Flatten those steaks to about 3/4cm / 1/3" thick using your fist or a mallet
- Slice into thin strips (about 5mm / 1/5" thick)
- Season with just a pinch of salt and pepper
The Famous 30-Second Sear:
- Heat 1 tablespoon oil in your large skillet until smoking hot
- Working in batches (don't crowd!), quickly spread half the beef strips
- Let them sear untouched for 30 seconds
- Quick flip and another 30 seconds
- Remove to a plate (yes, even with pink spots!)
- Repeat with remaining oil and beef
Create That Amazing Sauce:
- Lower heat to medium-high and add your butter
- Once melted, in go the onions for 1 minute
- Add mushrooms and cook until golden
Pro Tip: Scrape up all those golden bits from the pan - that's where the magic lives!
Make it Creamy:
- Sprinkle in flour and cook for 1 minute
- Pour in half the broth while stirring
- Add remaining broth once incorporated
- Stir in sour cream and mustard
- Don't worry if it looks split - it'll come together beautifully!
Finish with Love:
- Let simmer until thickness matches pouring cream (3-5 minutes)
- Season to taste
- Add beef back in with any plate juices
- Just 1 minute more, then off the heat!
