diff --git a/editor/store/selectors.js b/editor/store/selectors.js
index f1af3328ca33b..db34a9a379173 100644
--- a/editor/store/selectors.js
+++ b/editor/store/selectors.js
@@ -1122,12 +1122,13 @@ function buildInserterItemFromBlockType( state, enabledBlockTypes, blockType ) {
 /**
  * Given a reusable block, constructs an item that appears in the inserter.
  *
+ * @param {Object}           state             Global application state.
  * @param {string[]|boolean} enabledBlockTypes Enabled block types, or true/false to enable/disable all types.
  * @param {Object}           reusableBlock     Reusable block, likely from getReusableBlock().
  *
  * @return {Editor.InserterItem} Item that appears in inserter.
  */
-function buildInserterItemFromReusableBlock( enabledBlockTypes, reusableBlock ) {
+function buildInserterItemFromReusableBlock( state, enabledBlockTypes, reusableBlock ) {
 	if ( ! enabledBlockTypes || ! reusableBlock ) {
 		return null;
 	}
@@ -1137,7 +1138,12 @@ function buildInserterItemFromReusableBlock( enabledBlockTypes, reusableBlock )
 		return null;
 	}
 
-	const referencedBlockType = getBlockType( reusableBlock.type );
+	const referencedBlock = getBlock( state, reusableBlock.uid );
+	if ( ! referencedBlock ) {
+		return null;
+	}
+
+	const referencedBlockType = getBlockType( referencedBlock.name );
 	if ( ! referencedBlockType ) {
 		return null;
 	}
@@ -1173,7 +1179,7 @@ export function getInserterItems( state, enabledBlockTypes = true ) {
 	);
 
 	const dynamicItems = getReusableBlocks( state ).map( reusableBlock =>
-		buildInserterItemFromReusableBlock( enabledBlockTypes, reusableBlock )
+		buildInserterItemFromReusableBlock( state, enabledBlockTypes, reusableBlock )
 	);
 
 	const items = [ ...staticItems, ...dynamicItems ];
@@ -1201,7 +1207,7 @@ function getItemsFromInserts( state, inserts, enabledBlockTypes = true, maximum
 	const items = fillWithCommonBlocks( inserts ).map( insert => {
 		if ( insert.ref ) {
 			const reusableBlock = getReusableBlock( state, insert.ref );
-			return buildInserterItemFromReusableBlock( enabledBlockTypes, reusableBlock );
+			return buildInserterItemFromReusableBlock( state, enabledBlockTypes, reusableBlock );
 		}
 
 		const blockType = getBlockType( insert.name );
@@ -1248,8 +1254,8 @@ export function getFrecentInserterItems( state, enabledBlockTypes = true, maximu
 /**
  * Returns the reusable block with the given ID.
  *
- * @param {Object} state Global application state.
- * @param {string} ref   The reusable block's ID.
+ * @param {Object}        state Global application state.
+ * @param {number|string} ref   The reusable block's ID.
  *
  * @return {Object} The reusable block, or null if none exists.
  */
@@ -1260,10 +1266,12 @@ export const getReusableBlock = createSelector(
 			return null;
 		}
 
+		const isTemporary = isNaN( parseInt( ref ) );
+
 		return {
 			...block,
-			id: ref,
-			isTemporary: ! Number.isInteger( ref ),
+			id: isTemporary ? ref : +ref,
+			isTemporary,
 		};
 	},
 	( state, ref ) => [
@@ -1304,7 +1312,7 @@ export function isFetchingReusableBlock( state, ref ) {
  * @return {Array} An array of all reusable blocks.
  */
 export function getReusableBlocks( state ) {
-	return Object.values( state.reusableBlocks.data );
+	return Object.keys( state.reusableBlocks.data ).map( ( ref ) => getReusableBlock( state, ref ) );
 }
 
 /**
diff --git a/editor/store/test/selectors.js b/editor/store/test/selectors.js
index b0948eecfd65f..cc2fb4498964b 100644
--- a/editor/store/test/selectors.js
+++ b/editor/store/test/selectors.js
@@ -2344,7 +2344,9 @@ describe( 'selectors', () => {
 			const state = {
 				editor: {
 					present: {
-						blocksByUid: {},
+						blocksByUid: {
+							carrot: { name: 'core/test-block' },
+						},
 						blockOrder: {},
 						edits: {},
 					},
@@ -2352,11 +2354,7 @@ describe( 'selectors', () => {
 				currentPost: {},
 				reusableBlocks: {
 					data: {
-						123: {
-							id: 123,
-							title: 'My reusable block',
-							type: 'core/test-block',
-						},
+						123: { uid: 'carrot', title: 'My reusable block' },
 					},
 				},
 			};
@@ -2398,14 +2396,19 @@ describe( 'selectors', () => {
 				},
 				editor: {
 					present: {
+						blocksByUid: {
+							carrot: { name: 'core/test-block' },
+						},
 						blockOrder: [],
+						edits: {},
 					},
 				},
 				reusableBlocks: {
 					data: {
-						123: { id: 123, type: 'core/test-block' },
+						123: { uid: 'carrot' },
 					},
 				},
+				currentPost: {},
 			};
 
 			expect( getFrecentInserterItems( state, true, 3 ) ).toMatchObject( [
@@ -2545,33 +2548,20 @@ describe( 'selectors', () => {
 
 	describe( 'getReusableBlocks', () => {
 		it( 'should return an array of reusable blocks', () => {
-			const reusableBlock1 = {
-				id: '358b59ee-bab3-4d6f-8445-e8c6971a5605',
-				name: 'My cool block',
-				type: 'core/paragraph',
-				attributes: {
-					content: 'Hello!',
-				},
-			};
-			const reusableBlock2 = {
-				id: '687e1a87-cca1-41f2-a782-197ddaea9abf',
-				name: 'My neat block',
-				type: 'core/paragraph',
-				attributes: {
-					content: 'Goodbye!',
-				},
-			};
 			const state = {
 				reusableBlocks: {
 					data: {
-						[ reusableBlock1.id ]: reusableBlock1,
-						[ reusableBlock2.id ]: reusableBlock2,
+						123: { uid: 'carrot' },
+						reusable1: { uid: 'broccoli' },
 					},
 				},
 			};
 
 			const reusableBlocks = getReusableBlocks( state );
-			expect( reusableBlocks ).toEqual( [ reusableBlock1, reusableBlock2 ] );
+			expect( reusableBlocks ).toEqual( [
+				{ id: 123, isTemporary: false, uid: 'carrot' },
+				{ id: 'reusable1', isTemporary: true, uid: 'broccoli' },
+			] );
 		} );
 
 		it( 'should return an empty array when no reusable blocks exist', () => {