Melt butter in a large skillet over medium heat for exactly 90 seconds until fragrant and foaming appears at the edges. Add diced onion and minced garlic, sautéing for three minutes until translucent and aromatic—this foundational step builds umami depth that defines elegant slow cooker soup.
Transfer the sautéed mixture to your slow cooker, then add chicken broth, diced potatoes, red bell pepper, salt, black pepper, paprika, cayenne pepper, and bay leaves. Do NOT add corn kernels yet—they'll become mushy if cooked the full six hours.
Cover and cook on LOW for exactly 5.5 hours until potatoes are fork-tender but not falling apart. Check at the 5-hour mark; CIA-level precision timing prevents the fine line between perfect texture and mush.
Whisk cornstarch with one tablespoon cold water to create a slurry, then stir into the slow cooker along with fresh or frozen corn kernels and cooked chicken pieces. This thickening agent disperses evenly without lumps when mixed with cold water first.
Increase heat to HIGH and cook uncovered for exactly 30 minutes, stirring twice, until stunning slow cooker corn chowder recipe achieves creamy consistency and corn kernels become bright and tender. Temperature precision prevents overcooking that makes beautiful crockpot chowder grainy.
Remove from heat and stir in heavy cream and half-and-half slowly while the soup rests for two minutes. Never add cold cream to boiling liquid—temper it by stirring constantly to prevent separation and ensure silky texture.
Remove bay leaves, taste for seasoning, and adjust salt or cayenne as needed. Finish with fresh chopped parsley for bright color contrast and herbaceous lift.