Learn how to make my sirloin steak tips, complete with tender meat, portobello mushrooms, and umami beef broth! They're delicious served on a bed of keto "mashed potatoes," low-carb veggies, or a thick slice of gluten-free bread.
Heat oil in large skillet over medium-high heat. Season beef with salt and pepper. Brown meat in hot oil, about 3-5 minutes per side, then set aside.
Place sliced mushrooms and onions into slow cooker. Top with browned beef, broth, Worcestershire sauce, garlic powder, thyme, oregano, basil, and parsley.
Cover crock and cook on low 6 to 8 hours or until meat is fork tender. Sauce will be thin. If thicker sauce is desired add in small amounts of xanthan gum (about 1 teaspoon or so). Or, use low carb thickener of choice.
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Notes
Although they are often called sirloin steak tips, they are actually cut from round steak. So if you can't find steak tips already cut, simply cube round steak.