General Oven to Slow cooker Cooking Time Conversions Oven
Oven	Slow cooker
15-30 minutes	1-1/2 to 2-1/2 hours on HIGH, or 4-6 hours on LOW
35-45 minutes	2 to 3 hours on HIGH, or 6-8 hours on LOW
1-3 hours	4 to 5 hours on HIGH, or 8-18 hours on LOW

Note: Most uncooked meat and vegetable combinations will require at least 8 hours on LOW. This gives the vegetables time to soften, the meat time to tenderize and all the flavors to blend.