diff --git a/lib/absinthe/plug.ex b/lib/absinthe/plug.ex
index 331661b..aa2ebaf 100644
--- a/lib/absinthe/plug.ex
+++ b/lib/absinthe/plug.ex
@@ -124,7 +124,27 @@ defmodule Absinthe.Plug do
 
   alias __MODULE__.Request
 
-  @raw_options [:analyze_complexity, :max_complexity]
+  @init_options [
+    :adapter,
+    :context,
+    :no_query_message,
+    :json_codec,
+    :pipeline,
+    :document_providers,
+    :schema,
+    :serializer,
+    :content_type,
+    :before_send,
+    :log_level,
+    :pubsub,
+    :analyze_complexity,
+    :max_complexity,
+    :transport_batch_payload_key
+  ]
+  @raw_options [
+    :analyze_complexity,
+    :max_complexity
+  ]
 
   @type function_name :: atom
 
@@ -140,6 +160,7 @@ defmodule Absinthe.Plug do
   - `:content_type` -- (Optional) The content type of the response. Should probably be set if `:serializer` option is used. Defaults to `"application/json"`.
   - `:before_send` -- (Optional) Set a value(s) on the connection after resolution but before values are sent to the client.
   - `:log_level` -- (Optional) Set the logger level for Absinthe Logger. Defaults to `:debug`.
+  - `:pubsub` -- (Optional) Pub Sub module for Subscriptions.
   - `:analyze_complexity` -- (Optional) Set whether to calculate the complexity of incoming GraphQL queries.
   - `:max_complexity` -- (Optional) Set the maximum allowed complexity of the GraphQL query. If a document’s calculated complexity exceeds the maximum, resolution will be skipped and an error will be returned in the result detailing the calculated and maximum complexities.
   - `:transport_batch_payload_key` -- (Optional) Set whether or not to nest Transport Batch request results in a `payload` key. Older clients expected this key to be present, but newer clients have dropped this pattern. (default: `true`)
@@ -162,6 +183,7 @@ defmodule Absinthe.Plug do
           content_type: String.t(),
           before_send: {module, atom},
           log_level: Logger.level(),
+          pubsub: module | nil,
           transport_batch_payload_key: boolean
         ]
 
@@ -300,11 +322,12 @@ defmodule Absinthe.Plug do
 
   defp update_config(conn, config) do
     config
-    |> update_pubsub(conn)
-    |> update_raw_options(conn)
+    |> update_config(:pubsub, conn)
+    |> update_config(:raw_options, conn)
+    |> update_config(:init_options, conn)
   end
 
-  defp update_pubsub(config, conn) do
+  defp update_config(config, :pubsub, conn) do
     pubsub = config[:pubsub] || config.context[:pubsub] || conn.private[:phoenix_endpoint]
 
     if pubsub do
@@ -314,12 +337,16 @@ defmodule Absinthe.Plug do
     end
   end
 
-  defp update_raw_options(config, %{private: %{absinthe: absinthe}}) do
+  defp update_config(config, :raw_options, %{private: %{absinthe: absinthe}}) do
     raw_options = Map.take(absinthe, @raw_options) |> Map.to_list()
     update_in(config.raw_options, &Keyword.merge(&1, raw_options))
   end
 
-  defp update_raw_options(config, _conn) do
+  defp update_config(config, :init_options, %{private: %{absinthe: absinthe}}) do
+    Map.merge(config, Map.take(absinthe, @init_options -- @raw_options))
+  end
+
+  defp update_config(config, _, _conn) do
     config
   end
 
diff --git a/test/lib/absinthe/plug_test.exs b/test/lib/absinthe/plug_test.exs
index 23514e1..7a5364e 100644
--- a/test/lib/absinthe/plug_test.exs
+++ b/test/lib/absinthe/plug_test.exs
@@ -513,14 +513,17 @@ defmodule Absinthe.PlugTest do
       assert conn.private.absinthe.root_value.field_on_root_value == "foo"
     end
 
-    test "set complexity" do
+    test "sets complexity" do
       opts = Absinthe.Plug.init(schema: TestSchema)
 
       query = "{expensive}"
 
       assert %{status: 200, resp_body: resp_body} =
                conn(:post, "/", Jason.encode!(%{"query" => query}))
-               |> Absinthe.Plug.put_options(analyze_complexity: true, max_complexity: 100)
+               |> Absinthe.Plug.put_options(
+                 analyze_complexity: true,
+                 max_complexity: 100
+               )
                |> put_req_header("content-type", "application/json")
                |> call(opts)
 
@@ -539,6 +542,23 @@ defmodule Absinthe.PlugTest do
 
       assert expected == resp_body
     end
+
+    test "sets all init options" do
+      opts = Absinthe.Plug.init(schema: TestSchema)
+      query = ""
+
+      assert %{resp_body: resp_body, resp_headers: resp_headers} =
+               conn(:post, "/", Jason.encode!(%{"query" => query}))
+               |> Absinthe.Plug.put_options(
+                 no_query_message: "No query!!",
+                 content_type: "text/who-knows"
+               )
+               |> put_req_header("content-type", "application/json")
+               |> call(opts)
+
+      assert %{"errors" => [%{"message" => "No query!!"}]} = resp_body
+      assert {"content-type", "text/who-knows; charset=utf-8"} in resp_headers
+    end
   end
 
   describe "assign_context/2" do