diff --git a/homeassistant/components/notify/__init__.py b/homeassistant/components/notify/__init__.py
index 31c7b8e4d70..f9b0a64db3d 100644
--- a/homeassistant/components/notify/__init__.py
+++ b/homeassistant/components/notify/__init__.py
@@ -18,7 +18,6 @@ import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import EntityDescription
 from homeassistant.helpers.entity_component import EntityComponent
 from homeassistant.helpers.restore_state import RestoreEntity
-from homeassistant.helpers.template import Template
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import dt as dt_util
 
@@ -39,7 +38,6 @@ from .legacy import (  # noqa: F401
     async_reload,
     async_reset_platform,
     async_setup_legacy,
-    check_templates_warn,
 )
 from .repairs import migrate_notify_issue  # noqa: F401
 
@@ -90,22 +88,14 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
 
     async def persistent_notification(service: ServiceCall) -> None:
         """Send notification via the built-in persistent_notify integration."""
-        message: Template = service.data[ATTR_MESSAGE]
-        check_templates_warn(hass, message)
-
-        title = None
-        title_tpl: Template | None
-        if title_tpl := service.data.get(ATTR_TITLE):
-            check_templates_warn(hass, title_tpl)
-            title = title_tpl.async_render(parse_result=False)
+        message: str = service.data[ATTR_MESSAGE]
+        title: str | None = service.data.get(ATTR_TITLE)
 
         notification_id = None
         if data := service.data.get(ATTR_DATA):
             notification_id = data.get(pn.ATTR_NOTIFICATION_ID)
 
-        pn.async_create(
-            hass, message.async_render(parse_result=False), title, notification_id
-        )
+        pn.async_create(hass, message, title, notification_id)
 
     hass.services.async_register(
         DOMAIN,
diff --git a/homeassistant/components/notify/const.py b/homeassistant/components/notify/const.py
index 6cd957e3afe..29064f24a66 100644
--- a/homeassistant/components/notify/const.py
+++ b/homeassistant/components/notify/const.py
@@ -30,8 +30,8 @@ SERVICE_PERSISTENT_NOTIFICATION = "persistent_notification"
 
 NOTIFY_SERVICE_SCHEMA = vol.Schema(
     {
-        vol.Required(ATTR_MESSAGE): cv.template,
-        vol.Optional(ATTR_TITLE): cv.template,
+        vol.Required(ATTR_MESSAGE): cv.string,
+        vol.Optional(ATTR_TITLE): cv.string,
         vol.Optional(ATTR_TARGET): vol.All(cv.ensure_list, [cv.string]),
         vol.Optional(ATTR_DATA): dict,
     }
diff --git a/homeassistant/components/notify/legacy.py b/homeassistant/components/notify/legacy.py
index dcb148a99f5..a210e80242e 100644
--- a/homeassistant/components/notify/legacy.py
+++ b/homeassistant/components/notify/legacy.py
@@ -13,7 +13,6 @@ from homeassistant.core import HomeAssistant, ServiceCall, callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import discovery
 from homeassistant.helpers.service import async_set_service_schema
-from homeassistant.helpers.template import Template
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.loader import async_get_integration, bind_hass
 from homeassistant.setup import (
@@ -155,19 +154,6 @@ def async_setup_legacy(
     ]
 
 
-@callback
-def check_templates_warn(hass: HomeAssistant, tpl: Template) -> None:
-    """Warn user that passing templates to notify service is deprecated."""
-    if tpl.is_static or hass.data.get("notify_template_warned"):
-        return
-
-    hass.data["notify_template_warned"] = True
-    LOGGER.warning(
-        "Passing templates to notify service is deprecated and will be removed in"
-        " 2021.12. Automations and scripts handle templates automatically"
-    )
-
-
 @bind_hass
 async def async_reload(hass: HomeAssistant, integration_name: str) -> None:
     """Register notify services for an integration."""
@@ -255,19 +241,17 @@ class BaseNotificationService:
     async def _async_notify_message_service(self, service: ServiceCall) -> None:
         """Handle sending notification message service calls."""
         kwargs = {}
-        message: Template = service.data[ATTR_MESSAGE]
-        title: Template | None
+        message: str = service.data[ATTR_MESSAGE]
+        title: str | None
         if title := service.data.get(ATTR_TITLE):
-            check_templates_warn(self.hass, title)
-            kwargs[ATTR_TITLE] = title.async_render(parse_result=False)
+            kwargs[ATTR_TITLE] = title
 
         if self.registered_targets.get(service.service) is not None:
             kwargs[ATTR_TARGET] = [self.registered_targets[service.service]]
         elif service.data.get(ATTR_TARGET) is not None:
             kwargs[ATTR_TARGET] = service.data.get(ATTR_TARGET)
 
-        check_templates_warn(self.hass, message)
-        kwargs[ATTR_MESSAGE] = message.async_render(parse_result=False)
+        kwargs[ATTR_MESSAGE] = message
         kwargs[ATTR_DATA] = service.data.get(ATTR_DATA)
 
         await self.async_send_message(**kwargs)
diff --git a/tests/auth/mfa_modules/test_notify.py b/tests/auth/mfa_modules/test_notify.py
index d6f4d80f99e..8047ba2fef3 100644
--- a/tests/auth/mfa_modules/test_notify.py
+++ b/tests/auth/mfa_modules/test_notify.py
@@ -165,8 +165,7 @@ async def test_login_flow_validates_mfa(hass: HomeAssistant) -> None:
     assert notify_call.domain == "notify"
     assert notify_call.service == "test-notify"
     message = notify_call.data["message"]
-    message.hass = hass
-    assert MOCK_CODE in message.async_render()
+    assert MOCK_CODE in message
 
     with patch("pyotp.HOTP.verify", return_value=False):
         result = await hass.auth.login_flow.async_configure(
@@ -224,8 +223,7 @@ async def test_login_flow_validates_mfa(hass: HomeAssistant) -> None:
     assert notify_call.domain == "notify"
     assert notify_call.service == "test-notify"
     message = notify_call.data["message"]
-    message.hass = hass
-    assert MOCK_CODE in message.async_render()
+    assert MOCK_CODE in message
 
     with patch("pyotp.HOTP.verify", return_value=True):
         result = await hass.auth.login_flow.async_configure(
@@ -264,8 +262,7 @@ async def test_setup_user_notify_service(hass: HomeAssistant) -> None:
     assert notify_call.domain == "notify"
     assert notify_call.service == "test1"
     message = notify_call.data["message"]
-    message.hass = hass
-    assert MOCK_CODE in message.async_render()
+    assert MOCK_CODE in message
 
     with patch("pyotp.HOTP.at", return_value=MOCK_CODE_2):
         step = await flow.async_step_setup({"code": "invalid"})
@@ -281,8 +278,7 @@ async def test_setup_user_notify_service(hass: HomeAssistant) -> None:
     assert notify_call.domain == "notify"
     assert notify_call.service == "test1"
     message = notify_call.data["message"]
-    message.hass = hass
-    assert MOCK_CODE_2 in message.async_render()
+    assert MOCK_CODE_2 in message
 
     with patch("pyotp.HOTP.verify", return_value=True):
         step = await flow.async_step_setup({"code": MOCK_CODE_2})
diff --git a/tests/components/notify/test_legacy.py b/tests/components/notify/test_legacy.py
index 79a1b75dcae..eeacf915b03 100644
--- a/tests/components/notify/test_legacy.py
+++ b/tests/components/notify/test_legacy.py
@@ -19,7 +19,7 @@ from homeassistant.helpers.reload import async_setup_reload_service
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.setup import async_setup_component
 
-from tests.common import MockPlatform, async_get_persistent_notifications, mock_platform
+from tests.common import MockPlatform, mock_platform
 
 
 class NotificationService(notify.BaseNotificationService):
@@ -186,24 +186,6 @@ async def test_remove_targets(hass: HomeAssistant) -> None:
     assert test.registered_targets == {"test_c": 1}
 
 
-async def test_warn_template(
-    hass: HomeAssistant, caplog: pytest.LogCaptureFixture
-) -> None:
-    """Test warning when template used."""
-    assert await async_setup_component(hass, "notify", {})
-
-    await hass.services.async_call(
-        "notify",
-        "persistent_notification",
-        {"message": "{{ 1 + 1 }}", "title": "Test notif {{ 1 + 1 }}"},
-        blocking=True,
-    )
-    # We should only log it once
-    assert caplog.text.count("Passing templates to notify service is deprecated") == 1
-    notifications = async_get_persistent_notifications(hass)
-    assert len(notifications) == 1
-
-
 async def test_invalid_platform(
     hass: HomeAssistant, caplog: pytest.LogCaptureFixture, tmp_path: Path
 ) -> None:
@@ -550,27 +532,11 @@ async def test_sending_none_message(hass: HomeAssistant, tmp_path: Path) -> None
             notify.DOMAIN, notify.SERVICE_NOTIFY, {notify.ATTR_MESSAGE: None}
         )
     assert (
-        str(exc.value)
-        == "template value is None for dictionary value @ data['message']"
+        str(exc.value) == "string value is None for dictionary value @ data['message']"
     )
     send_message_mock.assert_not_called()
 
 
-async def test_sending_templated_message(hass: HomeAssistant, tmp_path: Path) -> None:
-    """Send a templated message."""
-    send_message_mock = await help_setup_notify(hass, tmp_path)
-    hass.states.async_set("sensor.temperature", 10)
-    data = {
-        notify.ATTR_MESSAGE: "{{states.sensor.temperature.state}}",
-        notify.ATTR_TITLE: "{{ states.sensor.temperature.name }}",
-    }
-    await hass.services.async_call(notify.DOMAIN, notify.SERVICE_NOTIFY, data)
-    await hass.async_block_till_done()
-    send_message_mock.assert_called_once_with(
-        "10", {"title": "temperature", "data": None}
-    )
-
-
 async def test_method_forwards_correct_data(
     hass: HomeAssistant, tmp_path: Path
 ) -> None: