3 or 4 chicken breasts, halved crosswise into cutlets
Salt and pepper, as needed
Olive, grapeseed or avocado oil, for cooking (about 3 TBSP total)
1 cup diced sweet onion
12 oz. sliced mushrooms
½ cup white wine (technically optional, but adds huge flavor)
½ cup chicken stock
½ cup heavy cream (you can use half and half, for a lighter sauce)
â…“ cup basil pesto (store-bought or homemade)