public class RecipeListAdapter extends RecyclerView.Adapter<RecipeListAdapter.ViewHolder>{

    private List<Recipe> mRecipeSet;
    private Button mAddToGroceriesButton;


    public RecipeListAdapter(List<Recipe> recipes){
        mRecipeSet = recipes;
    }

    // Provide a reference to the views for each data item
    // Complex data items may need more than one view per item, and
    // you provide access to all the views for a data item in a view holder
    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        //This is what will handle what happens when you click a recipe in the recycler view


        private TextView mRecipeName;
        private TextView mPrepTime;
        private TextView mCookTime;
        private TextView mServingSize;
        private RelativeLayout mRecipeTextSection;


        public ViewHolder(View v) {
            super(v);
            mRecipeName = (TextView) v.findViewById(R.id.recipe_list_recycler_view_recipe_name);
            mServingSize = (TextView) v.findViewById(R.id.recipe_list_recycler_view_serving_size);
            mPrepTime = (TextView) v.findViewById(R.id.recipe_list_recycler_view_prep_time);
            mCookTime = (TextView) v.findViewById(R.id.recipe_list_recycler_view_cook_time);
            mRecipeTextSection = (RelativeLayout) v.findViewById(R.id.recycled_item_section_view);

            mRecipeTextSection.setOnClickListener(this);

            mAddToGroceriesButton = (Button) v.findViewById(R.id.add_to_grocery_list);
            mAddToGroceriesButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    int position = getAdapterPosition();
                    Recipe recipeToGrocery = mRecipeSet.get(position);

                    //RecipeDB dbHelper = new RecipeDB(v.getContext());
                    //dbHelper.addGroceryItem(recipeToGrocery);

                    if(!recipeToGrocery.isInList()) {
                        RecipeDB dbHelper = new RecipeDB(v.getContext());
                        dbHelper.addGroceryItem(recipeToGrocery);

                        recipeToGrocery.setInList(true);
                        dbHelper.updateRecipe(recipeToGrocery);
                        mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);
                        Toast.makeText(v.getContext(), recipeToGrocery.getRecipeName() + " added to grocery list.", Toast.LENGTH_SHORT).show();
                    }
                    else {
                        Toast.makeText(v.getContext(), "That recipe is already in the list.", Toast.LENGTH_SHORT).show();
                    }

                }
            });

        }

        @Override
        public void onClick(View v){
            int position = getAdapterPosition();
            Intent i = new Intent(v.getContext(), RecipeTextView.class);
            Recipe selectedRecipe = mRecipeSet.get(position);
            i.putExtra("view_recipe_key", selectedRecipe);
            v.getContext().startActivity(i);
        }

    }


    public void add(int position, Recipe item) {
        mRecipeSet.add(position, item);
        notifyItemInserted(position);
    }

    public void remove(Recipe item) {
        int position = mRecipeSet.indexOf(item);
        mRecipeSet.remove(position);
        notifyItemRemoved(position);
    }



    public RecipeListAdapter(ArrayList<Recipe> myRecipeset) {
        mRecipeSet = myRecipeset;
    }

    // Create new views (invoked by the layout manager)
    @Override
    public RecipeListAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        // create a new view
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.recipe_item_recycled, parent, false);
        ViewHolder vh = new ViewHolder(v);
        return vh;

    }


    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        Recipe recipe = mRecipeSet.get(position);
        String recipeName = recipe.getRecipeName();
        String prepTime = "Prep Time: " + String.valueOf(recipe.getPrepTime()) + " minutes";
        String cookTime = "Cook Time: " + String.valueOf(recipe.getCookTime()) + " minutes";
        String servingSize = "Servings: " + String.valueOf(recipe.getServings());

        holder.mRecipeName.setText(recipeName);

        //Only display values if they are not null
        if(recipe.getServings() != null) {
            holder.mServingSize.setText(servingSize);
        }
        if (recipe.getPrepTime() != null) {
            holder.mPrepTime.setText(prepTime);
        }
        if(recipe.getCookTime() != null) {
            holder.mCookTime.setText(cookTime);
        }


    }

    // Return the size of your dataset (invoked by the layout manager)
    @Override
    public int getItemCount() {
        if(mRecipeSet != null) {
            return mRecipeSet.size();
        }
        return 0;
    }



}

mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);

if(recipe.isInList()){
            mAddToGroceriesButton.setBackgroundResource(R.mipmap.ic_playlist_add_check_black_24dp);
        }

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/apk/res/android"
    android:layout_margin="7dp"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingLeft="10dp"
    android:id="@+id/recycled_item_section_view"
    android:elevation="30dp"
    android:background="@drawable/background_border"
    >


    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        tools:text="Recipe name"
        android:textSize="24dp"
        android:textColor="@color/black"
        android:id="@+id/recipe_list_recycler_view_recipe_name"
        android:paddingBottom="3dp"
        android:maxWidth="275dip"
        android:singleLine="false"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="18dp"
        android:textColor="@color/black"
        android:layout_below="@id/recipe_list_recycler_view_recipe_name"
        android:id="@+id/recipe_list_recycler_view_serving_size"
        android:paddingBottom="3dp"/>

    <Button
        android:layout_width="35dp"
        android:layout_height="35dp"
        android:background="@mipmap/ic_playlist_add_black_24dp"
        android:height="36dp"
        android:padding="8dp"
        android:layout_alignParentRight="true"
        android:id="@+id/add_to_grocery_list"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/recipe_list_recycler_view_serving_size"
        android:layout_alignParentLeft="true"
        android:textSize="18dp"
        android:textColor="@color/black"
        android:id="@+id/recipe_list_recycler_view_prep_time"
        android:paddingBottom="3dp"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/recipe_list_recycler_view_prep_time"
        android:textSize="18dp"
        android:textColor="@color/black"
        android:layout_alignParentLeft="true"
        android:id="@+id/recipe_list_recycler_view_cook_time"/>


</RelativeLayout>