Slow-Simmered Cube Steak with Caramelized Onion Gravy

By AislePrompt Editorial · Published 2026-04-03 · Updated 2026-04-03

Tender cubed steak braised in a rich onion gravy with a hint of thyme, creating a comforting dish that melts in your mouth with minimal effort. This American-inspired slow-cooker recipe (keto), ready in about 60 minutes, pairs cubed beef steak, yellow onion, beef broth for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 410 calories and feeds 4, so it slots cleanly into a low-carb week and pairs well with cauliflower rice or roasted green vegetables. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1 lb cubed beef steak
• 2 medium, thinly sliced yellow onion
• 1 1/2 cups beef broth
• 2 tbsp all-purpose flour
• 2 tbsp unsalted butter
• 1 tsp, chopped fresh thyme
• 1/2 tsp kosher salt
• 1/4 tsp black pepper
• 1 tbsp olive oil

The slow cooker we’d leave this in all day → Best Slow Cookers in 2026: Top Picks + Buying Guide

Instructions

1. Step 1: Season cubed steak with 1/4 tsp salt and 1/8 tsp pepper. Heat 1 tbsp olive oil in a heavy pot over medium-high heat, then sear steak in batches for 3 minutes per side until browned, transferring to a plate.
2. Step 2: In the same pot, melt 2 tbsp butter over medium heat, then add sliced onions and cook for 10-12 minutes until deeply caramelized and golden, stirring occasionally to prevent burning.
3. Step 3: Sprinkle flour over onions and cook for 1 minute while stirring, then gradually whisk in beef broth until smooth. Return steak to the pot, add thyme, and simmer uncovered for 45 minutes until beef is fork-tender, stirring occasionally.