diff --git a/dotnet/targets/Microsoft.Sdk.Desktop.targets b/dotnet/targets/Microsoft.Sdk.Desktop.targets
index c963d184024f..6b878200c30a 100644
--- a/dotnet/targets/Microsoft.Sdk.Desktop.targets
+++ b/dotnet/targets/Microsoft.Sdk.Desktop.targets
@@ -15,7 +15,9 @@
 			<_OpenArguments Condition="'$(StandardInputPath)' != ''">$(_OpenArguments) --stdin "$(StandardInputPath)"</_OpenArguments>
 			<_OpenArgumentsPre Condition="'$(OpenNewInstance)' == 'true'">-n </_OpenArgumentsPre>
 			<_OpenArgumentsPre Condition="'$(OpenWaitForExit)' == 'true'">$(_OpenArgumentsPre) -W </_OpenArgumentsPre>
-			<_OpenArguments>$(_OpenArguments) $(RunEnvironment)</_OpenArguments>
+			<_OpenRunEnvironment>$(RunEnvironment)</_OpenRunEnvironment>
+			<_OpenRunEnvironment>$(_OpenRunEnvironment) @(RuntimeEnvironmentVariable->'--env "%(Identity)=%(Value)"', ' ')</_OpenRunEnvironment>
+			<_OpenArguments>$(_OpenArguments) $(_OpenRunEnvironment)</_OpenArguments>
 			<RunCommand>open</RunCommand>
 			<RunArguments>$(_OpenArgumentsPre) -a "$(TargetDir)/$(_AppBundleName).app" $(OpenArguments) $(_OpenArguments) --args</RunArguments>
 		</PropertyGroup>
diff --git a/dotnet/targets/Microsoft.Sdk.Mobile.targets b/dotnet/targets/Microsoft.Sdk.Mobile.targets
index 0524dea71dfd..7ecf8141a073 100644
--- a/dotnet/targets/Microsoft.Sdk.Mobile.targets
+++ b/dotnet/targets/Microsoft.Sdk.Mobile.targets
@@ -92,6 +92,7 @@
 			<!-- don't set standard output/error path, mlaunch will by default write to stdout/stderr -->
 		</PropertyGroup>
 		<ItemGroup>
+			<MlaunchEnvironmentVariables Include="@(RuntimeEnvironmentVariable)" />
 			<MlaunchEnvironmentVariables Include="__XAMARIN_DEBUG_MODE__=$(XamarinDebugMode)" Condition="'$(XamarinDebugMode)' != ''" />
 			<MlaunchEnvironmentVariables Include="__XAMARIN_DEBUG_PORT__=$(XamarinDebugPort)" Condition="'$(XamarinDebugPort)' != ''" />
 			<MlaunchEnvironmentVariables Include="__XAMARIN_DEBUG_HOSTS__=$(XamarinDebugHosts.Replace(';', '%3B'))" Condition="'$(XamarinDebugHosts)' != ''" />
diff --git a/dotnet/targets/Xamarin.Shared.Sdk.targets b/dotnet/targets/Xamarin.Shared.Sdk.targets
index 186244756bc7..4df059ea1d25 100644
--- a/dotnet/targets/Xamarin.Shared.Sdk.targets
+++ b/dotnet/targets/Xamarin.Shared.Sdk.targets
@@ -63,6 +63,7 @@
 	<ItemGroup>
 		<ProjectCapability Include="Apple" />
 		<ProjectCapability Include="Mobile" />
+		<ProjectCapability Include="RuntimeEnvironmentVariableSupport" />
 		
 		<ProjectCapability Include="IOSApplication" Condition="'$(_ProjectType)' == 'iOSExecutableProject'" />
 		<ProjectCapability Include="IOSAppExtension" Condition="'$(_ProjectType)' == 'iOSAppExtensionProject'" />
diff --git a/msbuild/Xamarin.MacDev.Tasks/Tasks/GetMlaunchArguments.cs b/msbuild/Xamarin.MacDev.Tasks/Tasks/GetMlaunchArguments.cs
index 5bf54925b1ef..b9008d1a1d19 100644
--- a/msbuild/Xamarin.MacDev.Tasks/Tasks/GetMlaunchArguments.cs
+++ b/msbuild/Xamarin.MacDev.Tasks/Tasks/GetMlaunchArguments.cs
@@ -311,8 +311,16 @@ protected string GenerateCommandLineCommands ()
 				sb.Add (StandardErrorPath);
 			}
 
-			foreach (var envvar in EnvironmentVariables)
-				sb.Add ("--setenv=" + envvar.ItemSpec);
+			foreach (var envvar in EnvironmentVariables) {
+				var hasValue = envvar.MetadataNames.Cast<string> ().Contains ("Value");
+				if (hasValue) {
+					var value = envvar.GetMetadata ("Value");
+					sb.Add ("--setenv=" + envvar.ItemSpec + "=" + value);
+
+				} else {
+					sb.Add ("--setenv=" + envvar.ItemSpec);
+				}
+			}
 
 			sb.Add (WaitForExit ? "--wait-for-exit:true" : "--wait-for-exit:false");
 
diff --git a/tests/common/DotNet.cs b/tests/common/DotNet.cs
index 914cd28c1440..0d0b0de77088 100644
--- a/tests/common/DotNet.cs
+++ b/tests/common/DotNet.cs
@@ -64,9 +64,10 @@ public static ExecutionResult AssertBuild (string project, Dictionary<string, st
 			return Execute ("build", project, properties, true, target: target, timeout: timeout);
 		}
 
-		public static ExecutionResult AssertRun (string project, Dictionary<string, string>? properties = null, TimeSpan? timeout = null)
+		public static ExecutionResult AssertRun (string project, Dictionary<string, string>? properties = null, TimeSpan? timeout = null, Dictionary<string, string>? environmentVariables = null)
 		{
-			return Execute ("run", project, properties, true, timeout: timeout);
+			var extraArguments = environmentVariables?.SelectMany (kvp => new string [] { "-e", $"{kvp.Key}={kvp.Value}" })?.ToArray () ?? [];
+			return Execute ("run", project, properties, true, timeout: timeout, extraArguments: extraArguments);
 		}
 
 		public static ExecutionResult AssertBuildFailure (string project, Dictionary<string, string>? properties = null)
@@ -208,7 +209,7 @@ public static ExecutionResult ExecuteCommand (string exe, Dictionary<string, str
 			return new ExecutionResult (output, output, rv.ExitCode);
 		}
 
-		public static ExecutionResult Execute (string verb, string project, Dictionary<string, string>? properties, bool assert_success = true, string? target = null, bool? msbuildParallelism = null, TimeSpan? timeout = null)
+		public static ExecutionResult Execute (string verb, string project, Dictionary<string, string>? properties, bool assert_success = true, string? target = null, bool? msbuildParallelism = null, TimeSpan? timeout = null, params string [] extraArguments)
 		{
 			if (!File.Exists (project))
 				throw new FileNotFoundException ($"The project file '{project}' does not exist.");
@@ -301,6 +302,7 @@ public static ExecutionResult Execute (string verb, string project, Dictionary<s
 						args.Add ("-maxcpucount:1");
 					}
 				}
+				args.AddRange (extraArguments);
 
 				var env = new Dictionary<string, string?> ();
 				env ["MSBuildSDKsPath"] = null;
diff --git a/tests/dotnet/MyRunApp/AppDelegate.cs b/tests/dotnet/MyRunApp/AppDelegate.cs
index 36180971144c..2a1b64386bd9 100644
--- a/tests/dotnet/MyRunApp/AppDelegate.cs
+++ b/tests/dotnet/MyRunApp/AppDelegate.cs
@@ -34,6 +34,12 @@ static int Main (string [] args)
 				}
 				File.WriteAllText (filename, sb.ToString ());
 
+				return 0;
+			case 2:
+				foreach (var kvp in Environment.GetEnvironmentVariables ().Cast<DictionaryEntry> ().OrderBy (v => v.Key)) {
+					Console.WriteLine ($"{kvp.Key}={kvp.Value}");
+				}
+
 				return 0;
 			}
 
diff --git a/tests/dotnet/UnitTests/ProjectTest.cs b/tests/dotnet/UnitTests/ProjectTest.cs
index 5985fd1691e3..c8808efce964 100644
--- a/tests/dotnet/UnitTests/ProjectTest.cs
+++ b/tests/dotnet/UnitTests/ProjectTest.cs
@@ -3853,9 +3853,11 @@ public void HttpClientHandlerFeatureTrimmedAway (ApplePlatform platform, string
 			}
 		}
 
-		[TestCase (ApplePlatform.MacCatalyst)]
-		[TestCase (ApplePlatform.MacOSX)]
-		public void Run (ApplePlatform platform)
+		[TestCase (ApplePlatform.MacCatalyst, true)]
+		[TestCase (ApplePlatform.MacCatalyst, false)]
+		[TestCase (ApplePlatform.MacOSX, true)]
+		[TestCase (ApplePlatform.MacOSX, false)]
+		public void Run (ApplePlatform platform, bool dotnetRunEnvironmentSupport)
 		{
 			var project = "MyRunApp";
 			Configuration.IgnoreIfIgnoredPlatform (platform);
@@ -3869,6 +3871,7 @@ public void Run (ApplePlatform platform)
 			var stderr = Path.Combine (tmpdir, "stderr.txt");
 
 			var properties = GetDefaultProperties ();
+			var dotnetRunEnvironment = new Dictionary<string, string> ();
 			properties ["XamarinDebugMode"] = "telegraph";
 			properties ["XamarinDebugHosts"] = "localhost";
 			properties ["XamarinDebugPort"] = "123";
@@ -3876,8 +3879,14 @@ public void Run (ApplePlatform platform)
 			properties ["StandardErrorPath"] = stderr;
 			properties ["OpenNewInstance"] = "true";
 			properties ["OpenWaitForExit"] = "true";
-			properties ["RunEnvironment"] = $"--env TEST_CASE=1 --env VARIABLE=VALUE --env TEST_FILENAME={tmpfile}";
-			DotNet.AssertRun (project_path, properties);
+			if (dotnetRunEnvironmentSupport) {
+				properties ["RunEnvironment"] = $"--env TEST_CASE=1 --env VARIABLE=VALUE --env TEST_FILENAME={tmpfile}";
+			} else {
+				dotnetRunEnvironment ["TEST_CASE"] = "1";
+				dotnetRunEnvironment ["VARIABLE"] = "VALUE";
+				dotnetRunEnvironment ["TEST_FILENAME"] = tmpfile;
+			}
+			DotNet.AssertRun (project_path, properties, environmentVariables: dotnetRunEnvironment);
 
 			Assert.Multiple (() => {
 				var envContents = File.ReadAllText (tmpfile);