diff --git a/homeassistant/config_entries.py b/homeassistant/config_entries.py
index 0682d46924d..6a95707dcda 100644
--- a/homeassistant/config_entries.py
+++ b/homeassistant/config_entries.py
@@ -3127,10 +3127,6 @@ class OptionsFlow(ConfigEntryBaseFlow):
         )
         self._config_entry = value
 
-    def initialize_options(self, config_entry: ConfigEntry) -> None:
-        """Initialize the options to a mutable copy of the config entry options."""
-        self._options = deepcopy(dict(config_entry.options))
-
     @property
     def options(self) -> dict[str, Any]:
         """Return a mutable copy of the config entry options.
@@ -3139,7 +3135,7 @@ class OptionsFlow(ConfigEntryBaseFlow):
         can only be referenced after initialisation.
         """
         if not hasattr(self, "_options"):
-            self.initialize_options(self.config_entry)
+            self._options = deepcopy(dict(self.config_entry.options))
         return self._options
 
     @options.setter
diff --git a/homeassistant/helpers/schema_config_entry_flow.py b/homeassistant/helpers/schema_config_entry_flow.py
index 58a44f9682d..b956a58398a 100644
--- a/homeassistant/helpers/schema_config_entry_flow.py
+++ b/homeassistant/helpers/schema_config_entry_flow.py
@@ -421,7 +421,9 @@ class SchemaOptionsFlowHandler(OptionsFlow):
         options, which is the union of stored options and user input from the options
         flow steps.
         """
-        self.initialize_options(config_entry)
+        # Although `self.options` is most likely unused, it is safer to keep both
+        # `self.options` and `self._common_handler.options` referring to the same object
+        self._options = copy.deepcopy(dict(config_entry.options))
         self._common_handler = SchemaCommonFlowHandler(self, options_flow, self.options)
         self._async_options_flow_finished = async_options_flow_finished
 
diff --git a/tests/helpers/test_schema_config_entry_flow.py b/tests/helpers/test_schema_config_entry_flow.py
index 877e3762d3b..e67525253bc 100644
--- a/tests/helpers/test_schema_config_entry_flow.py
+++ b/tests/helpers/test_schema_config_entry_flow.py
@@ -648,6 +648,10 @@ async def test_options_flow_state(hass: HomeAssistant) -> None:
     options_handler = hass.config_entries.options._progress[result["flow_id"]]
     assert options_handler._common_handler.flow_state == {"idx": None}
 
+    # Ensure that self.options and self._common_handler.options refer to the
+    # same mutable copy of the options
+    assert options_handler.options is options_handler._common_handler.options
+
     # In step 1, flow state is updated with user input
     result = await hass.config_entries.options.async_configure(
         result["flow_id"], {"option1": "blublu"}