• Melt butter in skillet.
• Add beef tips and brown. This takes 2-3 minutes, do not overcook.
• Remove beef from heat.
• Dice onion.
• Add onion, stock, Worcestershire, soy sauce, tomato paste, and seasonings to the crock pot.
• Mix together.
• Add beef tips to the crockpot including any drippings from the pan.
• Make sure the beef is completely covered by the liquid. If not add water.
• Cook on low for 6-8 hours.
• Beef is done when it falls apart when touched with a fork.

Sandwiches

• Slice onion into slices.
• Heat butter and olive oil in a skillet.
• Add onion and stir frequently.
• You are basically caramelizing the onions - but this takes forever so I usually cook them for about 25-30 minutes and add a little sugar to help caramelize them.
• Slice Hawaiian rolls in half to make the sandwiches.
• Add beef tips, blue cheese, and onions.
• If you don't like blue cheese you can make this with sharp cheddar and dijon mustard or your favorite cheese and a spicy mayo. Any way you make these sandwiches they are delicious.
• I serve them just like this but you can put the sandwiches on a pan and toast them for 3 minutes in the oven if you want to get fancy.