diff --git a/test/functional/services/common/browser.ts b/test/functional/services/common/browser.ts
index 93deeda19eee9..e809a0d69f7b6 100644
--- a/test/functional/services/common/browser.ts
+++ b/test/functional/services/common/browser.ts
@@ -477,11 +477,27 @@ export async function BrowserProvider({ getService }: FtrProviderContext) {
       );
     }
 
-    public async executeAsync<R>(
-      fn: string | ((...args: any[]) => Promise<R>),
+    public async executeAsync<T = unknown>(fn: (cb: (value?: T) => void) => void): Promise<T>;
+    public async executeAsync<T = unknown, A1 = unknown>(
+      fn: (a1: A1, cb: (value?: T) => void) => void,
+      a1: A1
+    ): Promise<T>;
+    public async executeAsync<T = unknown, A1 = unknown, A2 = unknown>(
+      fn: (a1: A1, a2: A2, cb: (value?: T) => void) => void,
+      a1: A1,
+      a2: A2
+    ): Promise<T>;
+    public async executeAsync<T = unknown, A1 = unknown, A2 = unknown, A3 = unknown>(
+      fn: (a1: A1, a2: A2, a3: A3, cb: (value?: T) => void) => void,
+      a1: A1,
+      a2: A2,
+      a3: A3
+    ): Promise<T>;
+    public async executeAsync<T = unknown>(
+      fn: (...args: any[]) => void,
       ...args: any[]
-    ): Promise<R> {
-      return await driver.executeAsyncScript(
+    ): Promise<T> {
+      return await driver.executeAsyncScript<T>(
         fn,
         ...cloneDeep<any>(args, (arg) => {
           if (arg instanceof WebElementWrapper) {
diff --git a/test/interpreter_functional/test_suites/run_pipeline/helpers.ts b/test/interpreter_functional/test_suites/run_pipeline/helpers.ts
index 2486fb0e1fbd0..bbf45b003c330 100644
--- a/test/interpreter_functional/test_suites/run_pipeline/helpers.ts
+++ b/test/interpreter_functional/test_suites/run_pipeline/helpers.ts
@@ -110,13 +110,13 @@ export function expectExpressionProvider({
         stepContext: ExpressionValue = context
       ): Promise<ExpressionResult> => {
         log.debug(`running expression ${step || expression}`);
-        return browser.executeAsync<ExpressionResult>(
-          (
-            _expression: string,
-            _currentContext: ExpressionValue & { type: string },
-            _initialContext: ExpressionValue,
-            done: (expressionResult: ExpressionResult) => void
-          ) => {
+        return browser.executeAsync<
+          ExpressionResult,
+          string,
+          ExpressionValue & { type: string },
+          ExpressionValue
+        >(
+          (_expression, _currentContext, _initialContext, done) => {
             if (!_currentContext) _currentContext = { type: 'null' };
             if (!_currentContext.type) _currentContext.type = 'null';
             return window
diff --git a/test/plugin_functional/test_suites/application_links/redirect_app_links.ts b/test/plugin_functional/test_suites/application_links/redirect_app_links.ts
index 54f7cdf1fdff5..9120018958bda 100644
--- a/test/plugin_functional/test_suites/application_links/redirect_app_links.ts
+++ b/test/plugin_functional/test_suites/application_links/redirect_app_links.ts
@@ -40,16 +40,15 @@ export default function ({ getService, getPageObjects }: PluginFunctionalProvide
   const testSubjects = getService('testSubjects');
 
   const setNonReloadedFlag = () => {
-    return browser.executeAsync(async (cb: Function) => {
+    return browser.executeAsync(async (cb) => {
       window.__nonReloadedFlag = true;
       cb();
     });
   };
-  const wasReloaded = (): Promise<boolean> => {
+  const wasReloaded = () => {
     return browser.executeAsync<boolean>(async (cb) => {
       const reloaded = window.__nonReloadedFlag !== true;
       cb(reloaded);
-      return reloaded;
     });
   };
 
diff --git a/test/plugin_functional/test_suites/core_plugins/application_status.ts b/test/plugin_functional/test_suites/core_plugins/application_status.ts
index 96bcda39f3981..31a1c28b50842 100644
--- a/test/plugin_functional/test_suites/core_plugins/application_status.ts
+++ b/test/plugin_functional/test_suites/core_plugins/application_status.ts
@@ -44,17 +44,17 @@ export default function ({ getService, getPageObjects }: PluginFunctionalProvide
   const testSubjects = getService('testSubjects');
 
   const setAppStatus = async (s: Partial<AppUpdatableFields>) => {
-    return browser.executeAsync(async (status: Partial<AppUpdatableFields>, cb: Function) => {
+    return browser.executeAsync(async (status, cb) => {
       window.__coreAppStatus.setAppStatus(status);
       cb();
     }, s);
   };
 
   const navigateToApp = async (i: string) => {
-    return (await browser.executeAsync(async (appId, cb: Function) => {
+    return await browser.executeAsync(async (appId, cb) => {
       await window.__coreAppStatus.navigateToApp(appId);
       cb();
-    }, i)) as any;
+    }, i);
   };
 
   // FLAKY: https://github.com/elastic/kibana/issues/65423
diff --git a/test/plugin_functional/test_suites/core_plugins/ui_plugins.ts b/test/plugin_functional/test_suites/core_plugins/ui_plugins.ts
index 929d5b68be93d..3a27be42a2a42 100644
--- a/test/plugin_functional/test_suites/core_plugins/ui_plugins.ts
+++ b/test/plugin_functional/test_suites/core_plugins/ui_plugins.ts
@@ -49,7 +49,7 @@ export default function ({ getService, getPageObjects }: PluginFunctionalProvide
 
       it('to start services via coreSetup.getStartServices', async () => {
         expect(
-          await browser.executeAsync(async (cb) => {
+          await browser.executeAsync<boolean>(async (cb) => {
             const [coreStart] = await window.__coreProvider.setup.core.getStartServices();
             cb(Boolean(coreStart.overlays));
           })
diff --git a/test/plugin_functional/test_suites/core_plugins/ui_settings.ts b/test/plugin_functional/test_suites/core_plugins/ui_settings.ts
index 6a0a5fed48e6d..3a618ceaeb22f 100644
--- a/test/plugin_functional/test_suites/core_plugins/ui_settings.ts
+++ b/test/plugin_functional/test_suites/core_plugins/ui_settings.ts
@@ -49,7 +49,7 @@ export default function ({ getService, getPageObjects }: PluginFunctionalProvide
 
       expect(settingsValue).to.be('2');
 
-      const settingsValueViaObservables = await browser.executeAsync(async (callback: Function) => {
+      const settingsValueViaObservables = await browser.executeAsync(async (callback) => {
         window.__coreProvider.setup.core.uiSettings
           .get$('ui_settings_plugin')
           .subscribe((v) => callback(v));
diff --git a/x-pack/test/licensing_plugin/public/updates.ts b/x-pack/test/licensing_plugin/public/updates.ts
index 4914513193cb4..4604cfe032b0b 100644
--- a/x-pack/test/licensing_plugin/public/updates.ts
+++ b/x-pack/test/licensing_plugin/public/updates.ts
@@ -27,7 +27,7 @@ export default function (ftrContext: FtrProviderContext) {
       await scenario.waitForPluginToDetectLicenseUpdate();
 
       expect(
-        await browser.executeAsync(async (cb: Function) => {
+        await browser.executeAsync(async (cb) => {
           const { setup, testUtils } = window.__coreProvider;
           // this call enforces signature check to detect license update
           // and causes license re-fetch
@@ -43,7 +43,7 @@ export default function (ftrContext: FtrProviderContext) {
       await scenario.waitForPluginToDetectLicenseUpdate();
 
       expect(
-        await browser.executeAsync(async (cb: Function) => {
+        await browser.executeAsync(async (cb) => {
           const { setup, testUtils } = window.__coreProvider;
           // this call enforces signature check to detect license update
           // and causes license re-fetch
@@ -59,7 +59,7 @@ export default function (ftrContext: FtrProviderContext) {
       await scenario.waitForPluginToDetectLicenseUpdate();
 
       expect(
-        await browser.executeAsync(async (cb: Function) => {
+        await browser.executeAsync(async (cb) => {
           const { setup, testUtils } = window.__coreProvider;
           // this call enforces signature check to detect license update
           // and causes license re-fetch
@@ -75,7 +75,7 @@ export default function (ftrContext: FtrProviderContext) {
       await scenario.waitForPluginToDetectLicenseUpdate();
 
       expect(
-        await browser.executeAsync(async (cb: Function) => {
+        await browser.executeAsync(async (cb) => {
           const { setup, testUtils } = window.__coreProvider;
           // this call enforces signature check to detect license update
           // and causes license re-fetch
diff --git a/x-pack/test/plugin_functional/test_suites/global_search/global_search_api.ts b/x-pack/test/plugin_functional/test_suites/global_search/global_search_api.ts
index 4cc056fd51c2a..ee1745436b735 100644
--- a/x-pack/test/plugin_functional/test_suites/global_search/global_search_api.ts
+++ b/x-pack/test/plugin_functional/test_suites/global_search/global_search_api.ts
@@ -14,13 +14,11 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
   const browser = getService('browser');
 
   const findResultsWithAPI = async (t: string): Promise<GlobalSearchResult[]> => {
-    return browser.executeAsync(async (term: string, cb: Function) => {
+    return browser.executeAsync(async (term, cb) => {
       const { start } = window.__coreProvider;
       const globalSearchTestApi: GlobalSearchTestApi = start.plugins.globalSearchTest;
-      globalSearchTestApi.findAll(term).then((results) => {
-        cb(results);
-      });
-    }, t) as any; // executeAsync signature is broken. return type should be inferred from the cb param.
+      globalSearchTestApi.findAll(term).then(cb);
+    }, t);
   };
 
   describe('GlobalSearch API', function () {